PDF malware analysis — malicious · 2bd704c6d13f4af2

MALICIOUS

PDF

103.3 KB Created: 2021-06-28 21:21:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20

MD5: 95327f926c27db6910ee132d735a80aa SHA-1: 7441cdec36a6751006b3eb5b57792aa31b23df21 SHA-256: 2bd704c6d13f4af2c7a3fb35e0a00d3e4542c244f6964cd4bc867c74add8e8b9

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF file was flagged by ClamAV as a phishing trojan and a machine learning classifier indicated a high probability of maliciousness. Heuristics identified the document as a link farm hosted on compromised WordPress sites, likely intended to redirect users to malicious content. No scripts were extracted, but the presence of numerous external links suggests a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9917

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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.
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://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160864adaf3bcc---xememipogogaboxipenukot.pdf In PDF document text
- https://krimgranit.ru/wp-content/plugins/super-forms/uploads/php/files/bb70527ef50f23b110b19e58a30b1dbd/55147022617.pdfIn PDF document text
- https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160776306b96d4---vovibufulu.pdfIn PDF document text
- https://willmarareachamber.com/ckfinder/userfiles/files/sufewutoxak.pdfIn PDF document text
- https://www.isgs.org/wp-content/plugins/super-forms/uploads/php/files/4b06b4757dfcf91211ea70a7d4d8bb17/liwizapeguremaje.pdfIn PDF document text
- https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160896862ed730.pdfIn PDF document text
- http://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b78368b3bd7---91314633602.pdfIn PDF document text
- http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8a99e2f8df---24996680548.pdfIn PDF document text
- http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b82f0d1dcbb---515470246.pdfIn PDF document text
- http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16076794de6e5c---75781676580.pdfIn PDF document text
- http://asckhn.com/acskhn/userfiles/file/wukanebaso.pdfIn PDF document text
- http://surtek.biz/image/files/20150120_083651.pdfIn PDF document text
- https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd537535015---berilozope.pdfIn PDF document text
- http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609be76dad611---88620774427.pdfIn PDF document text
- https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b11e7559167---letixirosemobofiburu.pdfIn PDF document text
- https://diaspoassur.com/wp-content/plugins/super-forms/uploads/php/files/6bc7bf2dee509de9fab0b681896b74f8/lojusepijopomow.pdfIn PDF document text
- https://www.mixedclass.com.au/wp-content/plugins/super-forms/uploads/php/files/uluddiehdpabvb9d57ml14u27d/59476064347.pdfIn PDF document text
- https://doublehair.center/upload/ckfinder/files/segoben.pdfIn PDF document text
- https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c170766d383---dakemulunobizoga.pdfIn PDF document text
- http://ballstonfamilymedicine.com/clients/861402/File/kokowuporamuwijimigitela.pdfIn PDF document text
- https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/10rnr5qrvkg75v7ar8gsmohmb5/68786384903.pdfIn PDF document text
- https://robinio.de/wp-content/plugins/super-forms/uploads/php/files/dvfbk1ev6hr6fqg5judvs2i6aq/93358141841.pdfIn PDF document text
- https://tramhuonghanoi.vn/upload/files/28706514180.pdfIn PDF document text
- http://xn--80aaa1acmiejxr6d7fg.xn--p1ai/data/files/botutomulawifurafotigop.pdfIn PDF document text
- http://dichvuhangngay.vn/uploads/image/files/1481129078.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=best+defensive+cards+in+clash+royalePDF 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_off00012df2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12DF2	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off00014604.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14604	18736 bytes
SHA-256: `548a3e073ca16d80df53657d6826358bea28ea12d135d55010cde9feff0b4b20`
`font_02_sfnt_off000176d8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x176D8	10808 bytes
SHA-256: `cf6828307a5a3f569262f6b27cffceef794c6b2239256f685b239f385d61e88f`

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