Malicious PDF — malware analysis report

Static analysis result for SHA-256 96b74e0eea2d29b9…

MALICIOUS

PDF

70.3 KB Created: 2021-10-05 13:47:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 8b8541340ea2007321c2d64615eb86ed SHA-1: dad914216a17aa1d4ee788d4865299eef317d3fd SHA-256: 96b74e0eea2d29b90b52757f94d2295c843353a9bbfe7b835afe8cf241ac7cf2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs that point to various domains, many of which appear to be compromised or disposable hosting. The ClamAV detection and ML classifier indicate malicious intent, likely related to phishing or malware delivery. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests the document's purpose is to act as a link farm, potentially for SEO manipulation or to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5623

Heuristics 5

  • 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
  • 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 https://inwebjor.ru/uplcv?utm_term=adhd+other+type PDF link annotation
    • http://savytrading.com/userfiles/file/sewivopitudukifuruku.pdfIn PDF document text
    • http://malovanesklomh.cz/images/file/82723531020.pdfIn PDF document text
    • http://vivo-mebel.ru/upload/file/ropabejipibun.pdfIn PDF document text
    • http://rafaelokazakov.com/file/riduxef.pdfIn PDF document text
    • http://www.oneworldkarate.com/fckeditorimages/userfiles/file/93500615213.pdfIn PDF document text
    • http://abwgulfport.com/uploads/files/22863216453.pdfIn PDF document text
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fb195bedf1---51485762527.pdfIn PDF document text
    • http://sys-svinding.dk/userfiles/file/zunaferebikase.pdfIn PDF document text
    • http://ptairsupply.com/userfiles/file/zagijalivoma.pdfIn PDF document text
    • http://rovitek.com/userfiles/file/desul.pdfIn PDF document text
    • http://awkontrakt.pl/ckfinder/userfiles/files/gukebadewiraga.pdfIn PDF document text
    • http://lifecontinues.ru/images/files/vanosegobavoxede.pdfIn PDF document text
    • https://rjpexport.com/files/74819310234.pdfIn PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/161452ee89dc84---65422171370.pdfIn PDF document text
    • http://olgapolyakova.com/files/files/29505376092.pdfIn PDF document text
    • https://thriveelearning.com/wp-content/plugins/super-forms/uploads/php/files/65291d326b1f8967e58965d23e2c39b2/dumirulipuwegirurezil.pdfIn PDF document text
    • http://fcv-bo.org/data/fcv-bo/userfiles/file/44503258460.pdfIn PDF document text
    • http://easyliveconstruction.com/ci/userfiles/files/33578728082.pdfIn PDF document text
    • https://securitydm.net/slicice/file/63075477852.pdfIn PDF document text
    • https://culturasiapamplona.com/guiarte_userfiles/files/50293715737.pdfIn PDF document text
    • https://kueapem.com/contents/files/42039484661.pdfIn PDF document text
    • http://xn--939a66v0zjo3bcvdmrp.com/data/ckfinder/files/wusiban.pdfIn PDF document text
    • https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/3c4f2fe742caace8e2d46107539c060e/poper.pdfIn PDF document text
    • https://willmarareachamber.com/ckfinder/userfiles/files/xexuzi.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d78b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD78B 10012 bytes
SHA-256: eef7afeee65a91efe4fb9a2dd2969c54e500a9a3a6bd212f6df9415cba1370f6
font_01_sfnt_off0000ede3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE3 17216 bytes
SHA-256: 203feaa6280541ecc7d2f2fe8d31de6bbd7317583baa26ad3174012fa3bb2b9b

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