Malicious PDF — malware analysis report

Static analysis result for SHA-256 3395ddd2cc31645c…

MALICIOUS

PDF

72.5 KB Created: 2020-12-07 00:03:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 36bd77f2d4e725ab83e2ca48c54900db SHA-1: d3cd6d6620aaf8339d04e2fe49b0a84ca87dbf35 SHA-256: 3395ddd2cc31645cc2e2b7cbf24728fd7933e40c85b0590eb76e33a962c94207
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 0.9998

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://trafffe.ru/strik?utm_term=arthur+schopenhauer+pdf+indir PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4382770/normal_5f9d331ca4297.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479691/normal_5fc6873fd952d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420239/normal_5fa0966eb4a53.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389801/normal_5fa2835b16cf1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385231/normal_5fa89093e7728.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370777/normal_5f90997b579b2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446400/normal_5fc6cb980ad18.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/fosagoba/fun_run_2_free_coins_fast.pdfIn PDF document text
    • https://s3.amazonaws.com/lefemijip/97359012124.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd40290131ad4298b06828/1606238250158/widafada.pdfIn PDF document text
    • https://s3.amazonaws.com/degagaziv/31615544872.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdee92f3de5e49b5291b9d/1606282898455/unblocked_blocked_games.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2ebbeff13940aa24cd01f/t/5fc6e6e356cd4459b3a94196/1606870768189/60655214017.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/bihar_police_syllabus_2019_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51fc3f7a-0f47-432c-8911-cc3b094a1e89/90779813.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_off0000dbd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBD6 5200 bytes
SHA-256: 207ad5dcc12d7bb775ccd38329e85bee14ec227409a8767da9273a84ba03346d
font_01_sfnt_off0000ed84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED84 11992 bytes
SHA-256: a178a514875f12274b98b6aee0f59d2bdd0da64092dbf88b6cb544279b95c47e

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