PDF malware analysis — malicious · d0396a40c7e67f2a

MALICIOUS

PDF

85.7 KB Created: 2021-08-22 00:18:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: 3aa10817c2eeaa78972a4d2041de4b1d SHA-1: 2975e66aa93652b139d90aeadf84340023de0ecb SHA-256: d0396a40c7e67f2aef94dc2b414ea7811b0d999b2020f3f20721444907b3b933

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, specifically as a phishing or trojan. It contains numerous links pointing to various domains, many of which appear to be compromised or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and link farm indicators strongly suggests an attempt to lead users to phishing sites or download further malware.

Machine Learning

Nyx PDF Classifier malicious score 0.9964

Heuristics 6

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.
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://aquamedia.cn/ckfinder/userfiles/files/53266376939.pdf In PDF document text
- https://imapcb.org/wp-content/plugins/super-forms/uploads/php/files/609ee30307ec3b9a1e36bb79e9e44842/32783480268.pdfIn PDF document text
- https://scavilecis.it/userfiles/file/42269141389.pdfIn PDF document text
- http://aunay-sous-auneau.fr/ckfinder/userfiles/files/1814511371.pdfIn PDF document text
- https://butagallery.com/userfiles/files/1179786245.pdfIn PDF document text
- https://couvreur-hautdoubs.fr/internet_new/images_et_fichiers//file/mudorikekemodu.pdfIn PDF document text
- https://autopratichesas.it/file/zajom.pdfIn PDF document text
- https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b188fa369f3---kopogago.pdfIn PDF document text
- https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/0e16013ebadd333557df17773e90202c/33407740413.pdfIn PDF document text
- http://alexandraharris.com/clients/36054/File/rudifobotukanofozego.pdfIn PDF document text
- https://urbanlivin.lu/userfiles/files/76052818859.pdfIn PDF document text
- https://birotex.rs/images/files/34189255467.pdfIn PDF document text
- https://skinrepublic.vn/webroot/img/files/panuparatikolaxupefo.pdfIn PDF document text
- http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a01b1164fce---bojuguzapupotilakuserit.pdfIn PDF document text
- http://sieuthibongda.net/ckfinder/userfiles/files/68581606496.pdfIn PDF document text
- http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607bb6af1b8fd---32833114034.pdfIn PDF document text
- https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b2d233108ea---tapeb.pdfIn PDF document text
- http://ljhalls.com/wp-content/plugins/super-forms/uploads/php/files/9ecbbf6e81187d867feda0116cc8a9bc/8834420921.pdfIn PDF document text
- http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/2am8uip3f5p0aobf1ait0bmuq5/24543308364.pdfIn PDF document text
- https://candbco.com/ckfinder/userfiles/files/55889048634.pdfIn PDF document text
- http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16081f36fc10b0---xijemosipelanominuwugad.pdfIn PDF document text
- https://canadianrelocation.net/wp-content/plugins/formcraft/file-upload/server/content/files/16075bd9879c63---lujuvidab.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=free+download+mp3+campursari+didi+kempot+full+album+rarPDF 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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d648.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD648	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000ee59.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEE59	16120 bytes
SHA-256: `d9275a46048ee4be302d0ba02ff5ebfa4bd9a0276530ee1fbb4ed3faebda457e`
`font_02_sfnt_off000103ba.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x103BA	11348 bytes
SHA-256: `8b7941f4813e85f91c34fd153cdc205282c4a967999061e09423d276fa1ec8d6`
`font_03_sfnt_off00011e3e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11E3E	15764 bytes
SHA-256: `2c884963922ba993c038b9edf28e9240d6248e2ec9d8c5eb8a2fb3848de8e449`

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