Malicious PDF — malware analysis report

Static analysis result for SHA-256 f96ef7c758e17e63…

MALICIOUS

PDF

71.2 KB Created: 2020-12-27 10:10:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 17ce18ed7cca5eec10b9296c74e27a0d SHA-1: 9fa64aed97b6b4a0a5fa7ede777730fc569d8901 SHA-256: f96ef7c758e17e6352e05b8f4ee4749f51a93ea4fa8449eb88c22aabb87d38f0
174 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by multiple heuristics, including a critical alert for linking to a known malicious redirector and a high-confidence ML classification. The embedded URL, 'https://traffmen.ru/123?utm_term=taylor+swift+teardrops+on+my+guitar+vinyl', is a strong indicator of a phishing or malware distribution attempt. The document body, though heavily corrupted, suggests a lure related to a Taylor Swift vinyl, which is a common tactic to entice users to click malicious links.

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
  • 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.
  • 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://traffmen.ru/123?utm_term=taylor+swift+teardrops+on+my+guitar+vinyl In PDF document text
    • https://static.s123-cdn-static.com/uploads/4414701/normal_5fe080bc5aaaa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379961/normal_5f94a34921ba3.pdfIn PDF document text
    • https://cdn.sqhk.co/miwataxanis/cnigqC1/88340401184.pdfIn PDF document text
    • https://cdn.sqhk.co/fuluzezufe/FjdkQok/frontline_commando_d-_day_apk_mod_revdl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393893/normal_5f929ca257bc5.pdfIn PDF document text
    • https://saniluje.weebly.com/uploads/1/3/4/3/134323688/cc91354d6fb5.pdfIn PDF document text
    • https://cdn.sqhk.co/fifapupifig/Y8LQZib/23741232573.pdfIn PDF document text
    • https://cdn.sqhk.co/jevipugirofi/fFja8ih/lusura.pdfIn PDF document text
    • https://cdn.sqhk.co/fakobijo/dheEhgt/fury_road_honest_trailer.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500430/normal_5fbe0cc683de6.pdfIn PDF document text
    • https://cdn.sqhk.co/xurazegoba/hijb6vo/sugabobemikanosunegovaga.pdfIn PDF document text
    • https://cdn.sqhk.co/norifasil/aRifWiB/messenger_kids_parent_dashboard.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366637/normal_5f8735d4c8835.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1771947c-ab5b-4561-959e-01d014c2492a/16796342652.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/023649ea-8fde-44b4-bf07-0eb6e1d691a9/lata_i_cancelar_un_orden_en_stockx.pdfIn PDF document text
    • https://s3.amazonaws.com/mejawiwomak/99405872552.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_off0000d807.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD807 5564 bytes
SHA-256: 6185591108ce2de827e7f669aee18663014ea295d974a2ee757238fe58c94a52
font_01_sfnt_off0000eb00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB00 10620 bytes
SHA-256: e786f8c43d35400d36c662824f827955ba53b5d129a376c272ab341aba238ff6

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