Malicious PDF — malware analysis report

Static analysis result for SHA-256 96b7e12952062ee9…

MALICIOUS

PDF

70.2 KB Created: 2021-09-24 19:05:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 9565ee313f65f55bc97b0dfc0095fcde SHA-1: e347dc45d5658799bd86e701f6e67d0508257719 SHA-256: 96b7e12952062ee9040a46a96230db0da6447ec0fe90f84278fdd3b5a73ac2e7
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links pointing to compromised websites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and link farm heuristics indicates an attempt to distribute malware or conduct phishing operations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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 https://pixomot.ru/uplcv?utm_term=in+text+citation+example+apa+7th+edition PDF link annotation
    • http://jcbcharpentebois.com/ressource/site-image/files/93524543326.pdfIn PDF document text
    • https://www.colline-eternelle.com/ckfinder/userfiles/files/gugabofugirumatabojamafu.pdfIn PDF document text
    • http://vssteel1999.com/ckeditor/userfiles/files/silazuladiwidura.pdfIn PDF document text
    • http://liweisteel.co.th/ckfinder/userfiles/files/galelad.pdfIn PDF document text
    • http://99hospitalitygroup.com/ckfinder/userfiles/files/xifivusikovorumiwalenewok.pdfIn PDF document text
    • http://zatoodesign.com/userfiles/files/xixexinobolulapevep.pdfIn PDF document text
    • http://jgbt.us/pds/userfiles/files/bamugum.pdfIn PDF document text
    • https://producedepot.us/userfiles/files/21271124188.pdfIn PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/161443d914c5a1---relilizobu.pdfIn PDF document text
    • http://www.xzass.org/ckfinder/userfiles/files/47246828166.pdfIn PDF document text
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139842c631ad---zaxaraze.pdfIn PDF document text
    • https://ph789.com/pinhsuan/files/file/98122245191.pdfIn PDF document text
    • http://theloanwala.com/userfiles/file/jisimuwobiwix.pdfIn PDF document text
    • https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/5vmnmfdtv6099aglgegr9bic06/48784309715.pdfIn PDF document text
    • http://lblussana.it/images/file/58685065576.pdfIn PDF document text
    • http://aucoindeshalles.com/menu/file/82510746807.pdfIn PDF document text
    • http://fivelscope.net/fckimages/vimogekekoxowupuxovuzun.pdfIn PDF document text
    • https://tenekedjieva.com/uploads/file/lunebefiledo.pdfIn PDF document text
    • https://groupekheidri.com/ckfinder/userfiles/files/geparizib.pdfIn PDF document text
    • http://harasim.cz/uploaded/files/72066412833.pdfIn PDF document text
    • https://navliecky.net/userfiles/file/70211757755.pdfIn PDF document text
    • https://aarhuskortet.dk/images/file/12452937159.pdfIn PDF document text
    • http://ljhalls.com/wp-content/plugins/super-forms/uploads/php/files/b1990f91c3c38bf823005325b7e9db63/15189879134.pdfIn PDF document text
    • https://cyberbirddog.com/userfiles/files/topaviwanuwi.pdfIn PDF document text
    • https://xn--78-6kce7dfhb9dwb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/f87ac1ec1f2d71d1333af81c9a5748d3/17578997518.pdfIn PDF document text
    • 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.

FilenameKindSourceSize
font_00_sfnt_off0000b47a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB47A 10612 bytes
SHA-256: 0f2a5517bddc74140a5285637bba94700422d1b2051bfc641456796c0bdd2761
font_01_sfnt_off0000cc92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC92 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e4a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4A4 14984 bytes
SHA-256: 78f6d97a662ae687117c8f3c451c73fa07209a0a1001e79bff4861aa19b2cc87

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