Malicious PDF — malware analysis report

Static analysis result for SHA-256 948bcf6d7cb13805…

MALICIOUS

PDF

66.3 KB Created: 2020-11-27 17:32:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: ba1aeaed2119d262ad768d0c0f3daf6a SHA-1: d780d8cf9adcfa2adf7e7004878ca08ed1d7240d SHA-256: 948bcf6d7cb138056eec81c1e3265fafbf73c014b12fee570f55b9fde91c7e6a
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 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=small+equipment+identification+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4489428/normal_5fad493018f80.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/suzixegazunow/67367152216.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/tekurerizexanaguxokako.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/calligraphy_fonts_alphabet_a-_z.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81db3db7-d9cc-42e9-ae0f-c251d34b64fd/the_juice_box_bully.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/rutifoxenat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa435ec4-6219-4207-abf0-db95a29abc41/webonuzapazekaxiluvozot.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/sql_server_business_intelligence_development_studio_download_2008_r2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fba4c93-465e-4306-bf1e-9dcad0c718ef/echo_dot_3rd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c70dca82-3eea-4646-a611-eec0d6b7b205/skyrim_special_edition_dodge_mod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee24611f-0b9d-4330-8ade-fc34e0caa2f7/46194048620.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b501729-99b9-4c85-a2ce-559cf94ca2a9/53425871636.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4bcd8e95-12c5-48a9-9537-1ef81f5586e6/97193839301.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/34615042422.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b852.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB852 5504 bytes
SHA-256: 38d31b844e969526a5a9986da52e75ba6b0b563d0b6b6ab2d201194f0e57a24d
font_01_sfnt_off0000caf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAF6 10528 bytes
SHA-256: e47cc08b8efdf210e9d84c11f40ea7e4e2d6b752462b6c1b70ba6285dfa47003
font_02_sfnt_off0000ed98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED98 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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