Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdea3d408d036b40…

MALICIOUS

PDF

83.4 KB Created: 2020-11-09 18:49:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8321b967f168873837b74e7f0a1defa0 SHA-1: 1d4ce057a741a108a30c47e97a0ccec40162128f SHA-256: bdea3d408d036b40fc1751254ef2f8835f01ff1a9a7ec5bb25f6dec901bd54d2
174 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a callback-phone (TOAD) lure. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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://ggtraff.ru/123?keyword=registrar+of+deeds+jacksonville+nc In PDF document text
    • https://cdn-cms.f-static.net/uploads/4414352/normal_5f9cc0e3dfea4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380859/normal_5f8f174654266.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376870/normal_5f93361c6dad3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378605/normal_5f8c3a1000091.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379974/normal_5f918ca3535f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375339/normal_5f95a64098181.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368736/normal_5f8786e980153.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/dd409a70-b6b5-4664-bb84-af3cf5377c7e/rising_sun_budget_services.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71e0ae49-172a-49e0-bfc9-916ceb3b15ae/suzuki_samurai_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e40582c1-5b8f-4027-bd07-3375df740811/91794262998.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a664bff-5614-4900-9c93-5d0c0b225a2e/gofabarewevewajajabazutus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3aeec608-4647-46c8-9a36-d46fc8685dea/73964823505.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44694a4d-8701-443e-b5db-67a300ee2000/99300864072.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc1a779e-bb29-465a-b8fd-b9e24329f789/jewasitoro.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/dolasemobupozozisuxix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99e1474b-ceae-47fb-9e8f-d3aed4814036/.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/basic_computer_questions_and_answers_in_marathi.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eba0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBA0 5396 bytes
SHA-256: fc92a555b3aea5ca0c1435e1a5e1d043acaae3abb3b15567f428fe64d44f7526
font_01_sfnt_off0000fe23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE23 11508 bytes
SHA-256: 673bb9c90f42bd0691985bc61d8f60dccedd8ea49314255b973255480c06488d
font_02_sfnt_off0001258a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1258A 17460 bytes
SHA-256: 62001abfd1599ea4bf523f48b41823e52f61596c6936cd253f747eb219aa8da0

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