Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c0302e725f9bf2c…

MALICIOUS

PDF

87.7 KB Created: 2021-02-05 10:44:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 8c75fdc97ebcf9415bbd62d84357f87e SHA-1: 350fb8c1b1fc06c9b1cd3c505b7a736c8b827428 SHA-256: 1c0302e725f9bf2cc60045263dbb2ab2e418309dd16c63773fefc0503b244ab3
206 Risk Score

Malware Insights

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

The PDF file contains a link farm with multiple external URLs, many hosted on disposable domains, suggesting a phishing or scam attempt. The presence of a callback lure heuristic indicates a potential attempt to trick users into calling a fraudulent number. While no scripts were directly extracted, the PDF structure and URL patterns are consistent with malicious documents designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://baarspo.ru/123?utm_term=the+amazing+spider-man+%25282012+video+game%2529+xbox+one PDF link annotation
    • https://mabamigetope.weebly.com/uploads/1/3/4/4/134493328/nenixalusako.pdfIn PDF document text
    • http://regvoolkim.website/normas_de_auditoria_generalmente_acew0u65.pdfIn PDF document text
    • http://dusokogo.22web.org/cesim_business_simulation_report.pdfIn PDF document text
    • https://cdn.sqhk.co/wikaraxixi/gXahaja/30922379489.pdfIn PDF document text
    • https://pafetujesotizi.weebly.com/uploads/1/3/5/3/135348857/08393b68614.pdfIn PDF document text
    • https://kuvenamowafave.weebly.com/uploads/1/3/1/3/131379608/fobilaruxitudaf.pdfIn PDF document text
    • https://monowulesamewul.weebly.com/uploads/1/3/2/6/132682048/6875896.pdfIn PDF document text
    • https://cdn.sqhk.co/ratufewebu/iaiabge/42429582857.pdfIn PDF document text
    • https://cdn.sqhk.co/dosakupu/WB4w5if/zefuwijunoxe.pdfIn PDF document text
    • http://1xbets-reg.site/baltimore_ravens_injury_report_week_2ys4ih.pdfIn PDF document text
    • https://cdn.sqhk.co/pananumujo/igVUCjj/zutulixakevutuduga.pdfIn PDF document text
    • https://saxarewuvopa.weebly.com/uploads/1/3/4/8/134855039/tulekigujumew-xigawal-lerupulaxefo-sonifamu.pdfIn PDF document text
    • https://gebevomipo.weebly.com/uploads/1/3/0/7/130740462/vusanalivurakif-fuginujopa-jonizumemovepe.pdfIn PDF document text
    • https://tiwirekofer.weebly.com/uploads/1/3/5/3/135314588/borebepizetuwomepafo.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/tizowodifi/mafia_3_sign_of_times_trophy_guide.pdfIn PDF document text
    • http://vopapokolozanum.rf.gd/physical_science_deped.pdfIn PDF document text
    • http://joxumokuri.epizy.com/46476066011.pdfIn PDF document text
    • https://s3.amazonaws.com/nosepevozux/telephone_lady_gaga_sheet_music.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_off000114e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114E2 6120 bytes
SHA-256: 07311fce08c8bf08242e260c8690b160ece07c0edf6d88755241b84afb4dd641
font_01_sfnt_off000129b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129B0 11924 bytes
SHA-256: 0e6c4b0c88e73228c70e3d0248d80c4ce11d2bbc3e9b8f6c69e610a58c89f6a5

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