Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dbfa59482b997a6…

MALICIOUS

PDF

231.6 KB Created: 2020-12-06 08:28:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: b3f30c8167a4e35b18c106c6099f6e3d SHA-1: 18e39ace00462a33fa3b47558aef9a7d0d9b4c5f SHA-256: 1dbfa59482b997a6580d73b5095c6aad930be6ac36540caaf3397b0f457c4a14
190 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics, including a critical finding for a malicious redirector link and ML classification. The document body contains urgency and payment-related language, consistent with phishing lures. The embedded URL `https://cctraff.ru/strik?utm_term=maximum+penalty+for+violation+of+ccta` is a strong indicator of malicious intent, likely leading to a phishing page or further malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://cctraff.ru/strik?utm_term=maximum+penalty+for+violation+of+ccta In PDF document text
    • https://zadujemerumid.weebly.com/uploads/1/3/2/6/132695269/908035.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370778/normal_5f8c70f77a9ec.pdfIn PDF document text
    • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/2692242.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367905/normal_5f887f4042350.pdfIn PDF document text
    • https://tozupefiga.weebly.com/uploads/1/3/4/2/134265365/medobev_juvumif.pdfIn PDF document text
    • https://vijejomikozo.weebly.com/uploads/1/3/4/6/134668467/jafuxar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414174/normal_5fa6847969276.pdfIn PDF document text
    • https://kirimanadawa.weebly.com/uploads/1/3/4/3/134383910/zewirigetek-fotir-wikizeraguji.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/bajuse/nike_size_guide_mens_shorts.pdfIn PDF document text
    • https://s3.amazonaws.com/rurovikejigibu/soxusomepubadewasujag.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/fopopamudawegifuzozevaguv.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/assassin_s_creed_game_for_windows_10.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00034aaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34AAA 5100 bytes
SHA-256: 3fee96e6198a2623bf5fd2d4ec9a2360c4376e817badf2d7fc2528d1c8317463
font_01_sfnt_off00035c02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35C02 11260 bytes
SHA-256: 17c8c72fef97d861b0a4d641a4d824c62ecee688e644e501dd6b98c72b15118e
font_02_sfnt_off00038218.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38218 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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