Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe9274c2acfff1c8…

MALICIOUS

PDF

64.0 KB Created: 2020-11-18 13:36:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0f67f016d023ddf02b13faf5666a19ac SHA-1: 9b316409eb239826cadee5bc8b64d99372b12237 SHA-256: fe9274c2acfff1c83b18c96d14bd57570636e93c2ab34d040ff70b2266e64db3
96 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. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffking.ru/aws?utm_term=business+card+template++word PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403808/normal_5fa09bc9b3916.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411490/normal_5fa90fb7702b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382194/normal_5f8d361da0469.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/027044d2-7d8d-4fe7-84e6-d19915146d7a/madulanonazixozuvojul.pdfIn PDF document text
    • https://s3.amazonaws.com/netinuwa/14340998936.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fc22b5c-45d7-4a3d-bb01-fd968d721007/who_is_the_fastest_growing_army.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/apple_audited_financial_statements_2017.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7ea6cbf-0b13-4c4e-8b47-8c2031db3c0a/1028150788.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec602d2f-7c9b-457a-bdf3-ba43561eaf76/adventure_quest_hacks_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a74fa646-3220-4e7c-80fe-e71e61f5e4cb/padukilavujaxano.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_off0000bf04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF04 5360 bytes
SHA-256: 99e66824b176ec91b08dcaa96f9d797c32d18c48a9916dcf6b33556c9ded5122
font_01_sfnt_off0000d13d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD13D 10140 bytes
SHA-256: 423ce158186d20966ed71c84409a7c58ebccdd2721d1c19a0dceacaedb126114

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