Malicious PDF — malware analysis report

Static analysis result for SHA-256 869f7f64f8a1bc69…

MALICIOUS

PDF

86.8 KB Created: 2020-11-24 05:34:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 4ccd47c075813a93313fd173d4ad2629 SHA-1: a8c9e6e776c39c0c5dad539d8ae61fa4a5ae96db SHA-256: 869f7f64f8a1bc699301707afd9e41a62567e1137b9b688786f001b343ca0e32
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URL that points to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to song lyrics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffe.ru/123?utm_term=sloop+john+b+lyrics+and+chords PDF link annotation
    • 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://uploads.strikinglycdn.com/files/7ebd7e52-e96f-4495-84fe-dcfce0324aa5/86966817595.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04341ac4-6893-417e-aaf6-df7c0c431120/dazobabowarutajas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bed49146-3256-46e0-95fc-88c66e949110/78669267569.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40ef5171-99c5-4121-837f-380617ba1338/impossible_things_god_did_in_the_bible.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63acfc4e-08ed-4065-acc8-adef5d303d3c/10147104245.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3356af17-dd3d-4f35-a702-f5b2cc90eceb/62593909986.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6098e52-a413-4bec-991c-1516a0d3080c/49337120924.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d52607e1-db4c-4efe-a2a8-eb4aac981c49/marieb_10th_edition_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f0f873a-50c0-48f9-8a46-c39ed0629a8a/san_francisco_de_solano_mission.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c66c614-1c01-4322-9397-991c8b36fe48/49426174571.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/962be267-2538-4ce3-8cf0-6e6414324c02/madulixagagiratajube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b2178c6-b9d5-4d1b-933c-eddeaaad0ba8/lozabigaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51924ba7-ad7a-43c3-aa77-169aeca0d397/vipimuzurewerolido.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_off0001081e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1081E 5172 bytes
SHA-256: 21147f76db05c207a8fd9073fe55a32ea3d3880ac3c4d1df1f49c6ca3d329098
font_01_sfnt_off00011980.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11980 11304 bytes
SHA-256: 6649e6b43cf6aa3f68e5c06a5b1ffd2a5f5c03ab5d7d5cc8ae48ba25cb1de098
font_02_sfnt_off00014006.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14006 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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