PDF malware analysis — malicious · 5ab9724a3008848d

MALICIOUS

PDF

86.0 KB Created: 2021-06-30 22:43:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14

MD5: 21798cde894f3076c958ff6ccad445ab SHA-1: 65feb8951e055654ef8940cad27ce19d7fc62842 SHA-256: 5ab9724a3008848de94baa0f3a7130d75f797d021c4e7bc69f99f01f15dd7c13

164 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by a machine learning classifier and ClamAV. It functions as a link farm, containing numerous URLs pointing to compromised WordPress sites. These links likely serve as a distribution mechanism for phishing or malware, leveraging the 'Spearphishing Attachment' technique. No scripts were extracted, but the structure suggests a malicious intent to redirect users to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9835

Heuristics 7

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM

PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
Urgency / deadline lure low SE_URGENCY_LURE

Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607377f4c58c6---12890349113.pdf In PDF document text
- http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0f919210ae---66328594574.pdfIn PDF document text
- https://weblative.com/wp-content/plugins/super-forms/uploads/php/files/iiqdh0083n4tbkkbl8k82hnfot/91418918801.pdfIn PDF document text
- https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/mu58i0utn6fj3e36veqlstbv73/gufisavotosirosodadifana.pdfIn PDF document text
- https://www.travelticket.com.au/wp-content/plugins/super-forms/uploads/php/files/jjr46k3219ftuuptib4dop85e6/87502706257.pdfIn PDF document text
- http://hferrynetworks.com/FileData/ckfinder/files/20210624_1BADEF7EE037C3F3.pdfIn PDF document text
- http://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607764d5aded6---dawuloxosiletarafub.pdfIn PDF document text
- http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/75isetcm8b4nlfn8qk8l9a8qg3/gelifubetawoxe.pdfIn PDF document text
- https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/c96c76cec26a61ed30d062f9ec36c884/41320836980.pdfIn PDF document text
- https://www.lashharmony.co.uk/wp-content/plugins/super-forms/uploads/php/files/52e8o41u3ofb1qt3n8ia0af54o/folatewedinufel.pdfIn PDF document text
- http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d2eb2b1c77---zuvakurenusufuwami.pdfIn PDF document text
- http://www.bandungmesin.com/file/74842260373.pdfIn PDF document text
- http://bioterapiazabiegi.pl/obrazy/file/sasejuvasu.pdfIn PDF document text
- http://bostonmentors.com/userfiles/file/96644083575.pdfIn PDF document text
- https://www.ideaklinikankara.com/wp-content/plugins/formcraft/file-upload/server/content/files/160757e5a3326b---rudaguneru.pdfIn PDF document text
- https://mimpiindahsatu.com/contents//files/tixukexofisaviliza.pdfIn PDF document text
- http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/e7ot9aentehjm4heueckgh6vs0/54689152683.pdfIn PDF document text
- http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160ac261822090---labosuxanezivigepaxijesen.pdfIn PDF document text
- https://horgaszvelem.hu/ckfinder/userfiles/files/tunemador.pdfIn PDF document text
- https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/422124613fe3aabb495bf0ee09e3630f/xotanejulusi.pdfIn PDF document text
- http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160726c764c77d---56782021739.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075a914149c5---13015287458.pdfIn PDF document text
- https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607666585da73---puzewusefi.pdfIn PDF document text
- http://basyapiemlak.com/yukleme_klasoru/userfiles/file/wixubixaj.pdfIn PDF document text
- https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/108e4127d052b4e2617dd8bce442e01c/15110142096.pdfIn PDF document text
- http://edu-family72.ru/content/images/uploads/file/poraxagej.pdfIn PDF document text
- https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/gj8ianeq018kkltd7eaa1tfe1n/gamigobigonujeze.pdfIn PDF document text
- http://akicgiyim.com/userfiles/file/badubone.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=forever+book+pdfPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000edb0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEDB0	17780 bytes
SHA-256: `f5cab87a6c1b8150d6e8afe3d38f59d94c9ba9f84821d28108a790cb5aa5eaa1`
`font_01_sfnt_off00011c7f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11C7F	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00013496.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13496	10096 bytes
SHA-256: `bce5dd1297c918f1c7cb5a2bd2ef1daa03d41eae8aa5c172622e9285724ec761`

Open this report in the interactive analyzer, or submit your own file for analysis.