Malicious PDF — malware analysis report

Static analysis result for SHA-256 702fa5971e2e823c…

MALICIOUS

PDF

75.7 KB Created: 2020-12-26 09:44:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: af1827d2780f73870b55d07ab63e6161 SHA-1: e1f41de6a5cab614a81c082fd7a401afd4ddce38 SHA-256: 702fa5971e2e823c5aa9507d19a09a6fb3a382ede487542ceac5ce2d4cdbb049
214 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 PDF document contains heuristics indicating it is a malicious redirector and a brand-impersonation credential phishing lure for Facebook. It directs users to a malicious URL, likely to harvest credentials. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest an exploit or malicious redirection mechanism is in play, aligning with common phishing tactics.

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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://lenimupet.weebly.com/uploads/1/3/4/0/134013040/7284234.pdf.
  • 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://ggtraff.ru/strik?utm_term=web+logo+maker+online+free In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369183/normal_5f8d8d593bd13.pdfIn PDF document text
    • https://lenimupet.weebly.com/uploads/1/3/4/0/134013040/7284234.pdfIn PDF document text
    • https://livakazogoje.weebly.com/uploads/1/3/4/6/134622539/subezozuwirolo.pdfIn PDF document text
    • https://doxejukunalizep.weebly.com/uploads/1/3/4/8/134889306/besewopesija-fafajuna-xipesifoze-wegurokosunojik.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459162/normal_5fc1e5fa077b0.pdfIn PDF document text
    • https://cdn.sqhk.co/xulawajikigi/3zhjpgh/rogasefomogusixesidu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418746/normal_5fa6e77e76d9c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383680/normal_5f949b103d4e3.pdfIn PDF document text
    • https://cdn.sqhk.co/pujapipiwat/7I8Yejg/racechrono_obd2_iphone.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369514/normal_5fbc384a65e3d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460055/normal_5fe3ff46a00c4.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/d8f3b452-6ca8-4951-8bf7-4acd58e51be0/46674142898.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ea3deea-b23c-4e2d-bb9e-b29bcc07665c/99433400644.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1911431-5c49-4475-b2d5-4451b0d11014/74104349542.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed2405b4-998f-4a81-8c15-1625cb8ceb9c/reruzilikogepow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9417afad-190f-4077-926e-0ffb4b1676e1/monster_hunter_world_aqua_sack.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_off0000eb75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB75 5128 bytes
SHA-256: b5f845e8589a1c0b8400e07b5c25a30efd286c5da6a39acd6a08f72cb6e16193
font_01_sfnt_off0000fce6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCE6 10876 bytes
SHA-256: 2d4654f1bb0a6162a64ff838a503c757ee8b65c9a2338e38a9b11c27bec7cccd

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