Malicious PDF — malware analysis report

Static analysis result for SHA-256 02a575a98c4acab8…

MALICIOUS

PDF

65.3 KB Created: 2020-11-11 05:56:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: ae74bbe2de957822b6dc79c7b65b23da SHA-1: 5949909bdbf20c8aca7b90c51fd1d97b43982180 SHA-256: 02a575a98c4acab81f4daa5cafdc50b227188f73ea80fbd88338514eb9a64200
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. The 'SE_CALLBACK_LURE' heuristic indicates the document attempts to trick users into calling a phone number, consistent with tech support scams or financial fraud. The presence of numerous external links, including one to 'trafficel.ru', suggests a phishing or SEO poisoning attempt to redirect users to malicious content. No scripts were extracted, but the PDF structure and heuristics point to a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://trafficel.ru/aws?keyword=comcast+security+assurance+center PDF link annotation
    • https://givifajilodox.weebly.com/uploads/1/3/0/8/130874655/8183358.pdfIn PDF document text
    • https://dowikonusinewe.weebly.com/uploads/1/3/4/3/134374018/9309f71f.pdfIn PDF document text
    • https://kajovagej.weebly.com/uploads/1/3/4/7/134747054/tinez-xevofopowuf-nopelizudopezow.pdfIn PDF document text
    • https://xikalevu.weebly.com/uploads/1/3/4/3/134319979/zasar.pdfIn PDF document text
    • https://xedaliwim.weebly.com/uploads/1/3/1/4/131454603/jasenufi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369173/normal_5f8c26a38073a.pdfIn PDF document text
    • https://mizunawakore.weebly.com/uploads/1/3/1/4/131406356/4553488.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/ximupuv/posaz.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/8762589900.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/remington_1900_serial_number_lookup.pdfIn PDF document text
    • https://s3.amazonaws.com/rotowan/abstract_examples_apa.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_off0000c1f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1F6 4920 bytes
SHA-256: 686f396cc986bbbd7e3a9afafc6aa8cadb83ec0075e190eb24702eebc70822df
font_01_sfnt_off0000d29b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD29B 11208 bytes
SHA-256: c1e94ab853009eadddd4be539db8e257edea6fcc9e3214c9ac975fb49f01be0c

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