Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fb4d04653863885…

MALICIOUS

PDF

69.5 KB Created: 2020-11-25 09:53:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: c5299ea161e68db0fd38d6d6825ce646 SHA-1: 97105ef73e7eb00387c72d203357c49478f4bcbb SHA-256: 7fb4d0465386388520f4319aac0f18763db2615a08588c4f292ab15d92f57d03
96 Risk Score

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 0.9998

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://traffine.ru/123?utm_term=minimalist+hiking+boots+waterproof PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4427282/normal_5fb93291ada50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370529/normal_5fb274802d39f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480149/normal_5fb9454933d73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366652/normal_5f89124f6bfff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414514/normal_5f9dde9ad5e45.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365598/normal_5f900ae77ef50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417830/normal_5fa3141acfe12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372702/normal_5fa23c70d8aea.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/the_principle_of_redundancy_calculator.pdfIn PDF document text
    • https://s3.amazonaws.com/bejokazemur/online_web_to_converter_software.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/050ee1e2-1b03-4074-ac57-736461d55a52/56479565784.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/77157234723.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42f6b98b-e42d-462c-a362-a2128046d951/21947695940.pdfIn PDF document text
    • https://s3.amazonaws.com/wulotugadag/sibazema.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/bass_guitar_for_dummies_3rd_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/785a8601-f398-446e-9758-abee87ce034a/jaresogorumuvilevawadazez.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_off0000d21b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD21B 5616 bytes
SHA-256: aa16e6e36bff773b177591093cb824a5bbbea90a1b2609b26788e0c1ffd404ab
font_01_sfnt_off0000e523.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE523 10708 bytes
SHA-256: 4a8ecd6a43f3fa26faab6f9247f772773a7541d83ffe58310c4abe25f5a69331