Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ae5e80e93fd92ef…

MALICIOUS

PDF

98.7 KB Created: 2021-09-21 14:18:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 4ecdd897509e0fadab2983605f9393f5 SHA-1: caa065208a6bdddb1d74a3b7efa6b60ef02d75d3 SHA-256: 2ae5e80e93fd92ef6c2e2a4797fc08eb1554859dffe2868e8d2128eff058717e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of embedded URLs, many pointing to compromised or disposable domains, indicating a link farm designed to redirect users to malicious content. The file's structure and the presence of numerous external links strongly suggest it's part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9886

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://xn--2-140-swe8h.xn--p1ai/files/begekovogavoranavemep.pdf In PDF document text
    • https://gad-elhak.com/userfiles/file/nusezisiniloli.pdfIn PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141ba6f946ef---66455922703.pdfIn PDF document text
    • http://jrpst.pl/userfiles/file/xogerupite.pdfIn PDF document text
    • http://lnv-cnc.com/userfiles/file/62214000951.pdfIn PDF document text
    • https://markapin.com/calisma2/files/uploads/79403100499.pdfIn PDF document text
    • https://mirrorlink.com/public/files/files/vopukoloselomajezulajep.pdfIn PDF document text
    • http://asacnfservices.com/ckfinder/userfiles/files/69785604855.pdfIn PDF document text
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/301bb2b514bc35fd4c85add9286534f5/zuravimitapelivu.pdfIn PDF document text
    • https://printjet.pl/pliki_user/File/53277742530.pdfIn PDF document text
    • http://grupopiscis.com/upload/files/toporinurafowerikajojelux.pdfIn PDF document text
    • http://opuspoint.com/ckfinder/userfiles/files/govolokuvixenom.pdfIn PDF document text
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16143e58cd26ec---66814726917.pdfIn PDF document text
    • http://eastendmediation.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/46222659511.pdfIn PDF document text
    • https://lorus.rs/files/reramikitogitiwamojoguti.pdfIn PDF document text
    • http://nakakinpump.kr/fckeditor/upload/file/sugebifajewejibasopatikop.pdfIn PDF document text
    • https://myhoorayhealth.com/wp-content/plugins/super-forms/uploads/php/files/eb56822221425116662aed68a5eb57c1/92543430302.pdfIn PDF document text
    • https://uzmanwebci.com/calisma2/files/uploads/satatisegamitejokaxapegef.pdfIn PDF document text
    • https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/l5lcqgljki300og5k53dkmi2uu/jumibifikenajovekizagove.pdfIn PDF document text
    • http://cathugo-catamarans.de/res/wysiwyg/file/7819251060.pdfIn PDF document text
    • http://bodegaadrover.com/userfiles/imagenes/21965238826.pdfIn PDF document text
    • http://daming-school.com/userfiles/file/lijisipeboxujiwewimubim.pdfIn PDF document text
    • http://energy-labels.nl/userfiles/file/nutipeg.pdfIn PDF document text
    • https://valubil.com/public/uploads/cms_file/cms_files/92804573307.pdfIn PDF document text
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613c47c693d9f---19765509316.pdfIn PDF document text
    • https://pomtco.com/technical/files/file/ketamurubojopakafugawelo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=kotlin+parcelable+arraylistPDF 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.

FilenameKindSourceSize
font_00_sfnt_off00010fca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FCA 22496 bytes
SHA-256: 4a002e87dc9436f6ac731ef7a0260f0b3e56c53035023596b444b9f88f6f7eb0
font_01_sfnt_off00014ac8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14AC8 10612 bytes
SHA-256: f646f5b84124f2381a3f34d1d9c1b107652de4ce76b0d6e1b723758c69613bc6
font_02_sfnt_off000162fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x162FD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1