Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e71269c81414c77…

MALICIOUS

PDF

68.7 KB Created: 2020-11-27 11:45:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 57e68beb1b71454503b5ec7ea001b671 SHA-1: ebc768fb47b64bbe5608420115565ab5a3792697 SHA-256: 4e71269c81414c776dd189409833878588bda12daf0362fb976c8462e4243515
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that leads to a suspicious domain, likely intended to host a phishing page or download further malware. No scripts were extracted, but the presence of an external URI and the overall detection profile strongly suggest a phishing or credential harvesting attempt.

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/aws?utm_term=codex+guidelines+for+nutrition+labelling PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4406812/normal_5fa4ad66846be.pdfIn PDF document text
    • https://vupagujisixo.weebly.com/uploads/1/3/4/9/134904753/1585292.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473926/normal_5fa56ff935ec3.pdfIn PDF document text
    • https://wenadexedodoren.weebly.com/uploads/1/3/4/3/134322255/napanokip.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/vinejivunitego/32851541517.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91528d87-c1d3-4e64-b15c-341d5bece497/bazekoxonapisobus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1dbf99d-f662-48e6-b3e0-bbc97055e867/kukimojorefikimoxedima.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/curso_de_frances_em_gratis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e36f768-30ee-4e8c-ac39-3a50cda9bf6a/best_autism_programs_in_washington_state.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e02fd126-7151-4a16-b76a-5b0fab5c8ad2/clover_hill_golf_course_pittsburgh.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9179dab-4f6d-437b-bbff-762818d2d59d/wumewazuxozojaju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d5e0532-9b06-4304-bc9c-414f5afae947/vovusitorigabuzena.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_off0000d0b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0B3 5188 bytes
SHA-256: 444e124ce31f99db0cc36d5103ff7029f4b8faec53c2a1a2604e4cb9842aac13
font_01_sfnt_off0000e26b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE26B 10520 bytes
SHA-256: 278d9a2a9fa9893d7cead2f7c1c3c464259e81b492cd12e3f00bb8b1f742661e