Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ec37034ba9d0cf3…

MALICIOUS

PDF

70.4 KB Created: 2020-12-18 23:41:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: acc6dc6f4623a65b6f16734a68268da2 SHA-1: 19d11a35836ca7a26ff95621d2d24943e18b491d SHA-256: 0ec37034ba9d0cf3f0bfdbe48157e4b214c29c16b5159a24fa8af03516fe5a9a
156 Risk Score

Malware Insights

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

The PDF file is identified as malicious by ML classifiers and ClamAV, and contains a significant number of external links, indicating a potential link farm or redirection scheme. While no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to exploit users through deceptive content, likely related to phishing or malware distribution.

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
  • 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.
  • 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://trafftec.ru/strik?utm_term=toyota+forklift+7fgu25+operator+manual+pdf PDF link annotation
    • https://fupexojor.weebly.com/uploads/1/3/4/0/134017307/45fbfe79ca0125b.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/6659b356-5cea-4486-8ad7-475be8afd365/tilisajowijuzodamuk.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc15aa692c50b1a1e7aae0b/t/5fd08bcea4b4ef2db6a83c82/1607502799958/pocket_troops_strategy_rpg_mod_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85738238-8104-4cff-b5a5-efe9218944e9/69031767941.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5b3ea1d-588e-4f51-a0a5-e803b69b5a89/84539853175.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19543c49-bdc6-4958-8a80-3d06e9e36491/paradise_lost_translation_book_9.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/826a1bb3-e971-427f-b525-8889c555b8f0/marebibiduzuxaveko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1eb6afbe-60bc-4f66-9e2e-b7869e79242c/pillars_of_eternity_overstaying_his_welcome.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d4c1057-feb5-44ef-a84f-919ff8d17a64/kisegerodividupelikoz.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5bdc540f1034a5cca01ae/t/5fcb6e64b495bd2028211f11/1607167589494/scene_75_brunswick.pdfIn PDF document text
    • https://s3.amazonaws.com/davubewu/cachexia_treatment_guidelines.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2e067a13a450bab010c7c/t/5fc64d5a3f75b16643aab2dc/1606831451143/47990093221.pdfIn PDF document text
    • https://s3.amazonaws.com/bexolamabad/residential_construction_business_plan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a0f703a-366d-44fd-8a83-e68a61c56bcb/86384847740.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_off0000d488.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD488 5632 bytes
SHA-256: 0ec385f3a087e208ab162aeec6abacef16289dfc95c2b420845737e35fed517b
font_01_sfnt_off0000e7c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7C6 11064 bytes
SHA-256: c189c186d202598c62f1f927106219a1039f1b0d245b3519ea93f9639679e8ef

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