Malicious PDF — malware analysis report

Static analysis result for SHA-256 1be017927a241bca…

MALICIOUS

PDF

76.6 KB Created: 2021-05-20 01:12:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 01dd64ec2fd7e686518d5509aa2d79d3 SHA-1: 2ea2508b18fd9b4446a7823a21d381c01a761e82 SHA-256: 1be017927a241bcaaa4cf75f2345535a53bef530370124a1679a213f636d127b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains a large number of external links, suggesting it is part of a link farm designed to redirect users to potentially malicious sites. The primary malicious URL identified is https://maypoin.ru/strik?utm_term=minn+kota+i+pilot+link+app, which is likely used for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://maypoin.ru/strik?utm_term=minn+kota+i+pilot+link+app PDF link annotation
    • https://tetafawewaze.weebly.com/uploads/1/3/4/3/134378669/3485fe8e43.pdfIn PDF document text
    • https://ruwixotuso.weebly.com/uploads/1/3/4/1/134131383/sumalubo-taloxubuf.pdfIn PDF document text
    • https://mopopapepiror.weebly.com/uploads/1/3/2/7/132741339/6f66bb25363.pdfIn PDF document text
    • https://vezorobabuwej.weebly.com/uploads/1/3/0/9/130969079/4038771.pdfIn PDF document text
    • https://zevakevo.weebly.com/uploads/1/3/5/4/135400716/midep-natono-fobewetarew.pdfIn PDF document text
    • https://resafuki.weebly.com/uploads/1/3/1/3/131398359/lasirogedevazapoli.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kotodur/47329726629.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97c1a0e8-9755-49ff-94d4-453aacddda94/formato_de_carta_poder_mexico.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fd81b5e-5155-4cff-9627-cd3e2a062ef8/wexok.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/40752377248.pdfIn PDF document text
    • https://s3.amazonaws.com/sizabo/17127562075.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/given_fx61-x_what_is_the_value_of_f-8.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/award_ceremony_ppt_template.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxomigo/kifewolafipojuvawutu.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/ffxiv_goldsmith_leveling_guide_70-_80.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/409c63af-8349-466a-a984-55083dc1b5d0/60321613706.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/john_deere_345_leaf_bagger_attachment.pdfIn PDF document text
    • https://s3.amazonaws.com/nuvukivaxiren/sql_server_2016_books_online.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/27018391046.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC6F 4608 bytes
SHA-256: 5bfa171f3cfbcd7ba7e5779694f2cb79b71d9e0b310139c8d318c4928bd4efc2
font_01_sfnt_off0000fc3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC3C 11904 bytes
SHA-256: ee2d62ef3eba4d689c009acc0ddca312302ec2b009e7446ae163cd71c2d9de97

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