Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a072d21d4018690…

MALICIOUS

PDF

77.2 KB Created: 2021-04-10 07:47:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: ee523262d32c59d194408eebf976c4e0 SHA-1: 96ffefd29f9b53f4d5667807d66fbf1675fc522b SHA-256: 6a072d21d4018690e59c0fb8e990ad78d4651aa175f58068d55e6e2fc1bcb0bf
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. The PDF contains a large number of external links, suggesting a link farm or phishing attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://lozipotod.ru/strik?utm_term=are+over+the+range+microwaves+vented PDF link annotation
    • https://togezajotutev.weebly.com/uploads/1/3/0/8/130874352/poviv_manobeposasogak_gufaxopixixidu_kovosemejerixi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485799/normal_5fe9aaec9a56c.pdfIn PDF document text
    • https://vusipesokos.weebly.com/uploads/1/3/4/5/134585271/65059db.pdfIn PDF document text
    • https://kazuvamelu.weebly.com/uploads/1/3/0/7/130738637/zemuwak-xosinuneno-sononovevuxakez.pdfIn PDF document text
    • https://gabodubelekopo.weebly.com/uploads/1/3/4/3/134356924/2754149.pdfIn PDF document text
    • https://velademepol.weebly.com/uploads/1/3/1/8/131871907/3062d84f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485454/normal_602c52c96e498.pdfIn PDF document text
    • https://nidabiweni.weebly.com/uploads/1/3/4/8/134865500/dodeg-fegokoxedak-barokazi-zirajanuri.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486987/normal_5fd97a7ebdc73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374953/normal_6018be49a80e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491669/normal_5fd0da5da6716.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/wizuluworafid/furby_wont_connect_to_bluetooth.pdfIn PDF document text
    • https://s3.amazonaws.com/xanunafojuloki/92430876528.pdfIn PDF document text
    • https://s3.amazonaws.com/liwara/35947542172.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/dekovokepizadita.pdfIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/20301496444.pdfIn PDF document text
    • https://s3.amazonaws.com/gadumagabusodel/13934678285.pdfIn PDF document text
    • https://s3.amazonaws.com/fekife/electrical_theory_book_in_marathi.pdfIn PDF document text
    • https://s3.amazonaws.com/gisujubolidine/49012042795.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/motorola_surfboard_sbg6580_latest_firmware_update.pdfIn PDF document text
    • https://s3.amazonaws.com/zalisujezajaje/geremy_davis_scouting_report.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_off0000ee68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE68 5464 bytes
SHA-256: b2d3ca057ee8517a663a23cbd1cf47ba47691bfe58b7e3408d2738e1303b273f
font_01_sfnt_off000100e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100E7 10656 bytes
SHA-256: 9d33f33ab9cfa9a7e2d1ff3d08f7d948d155e64888baa879f3fab25e721a0e19

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