Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c29ece382c9e39f…

MALICIOUS

PDF

69.2 KB Created: 2020-12-23 11:31:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 476fd495e1f731a92bde08115a835d7b SHA-1: 4031fa87d34aea4024c4e5250400c15ed9efe491 SHA-256: 5c29ece382c9e39fd99f3782941ed020f8c08ec4c6505f0b8e11274facd3eaa0
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains heuristics indicating it is part of a link farm and hosts external URIs, suggesting a phishing or malware distribution attempt. The embedded URL 'https://trafftec.ru/strik?utm_term=winnipeg+blue+bomber+radio+broadcast' is likely a lure to a malicious site. While no scripts were directly extracted, the PDF structure and external link farm behavior are strong indicators of malicious intent, possibly involving embedded JavaScript for exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://trafftec.ru/strik?utm_term=winnipeg+blue+bomber+radio+broadcast PDF link annotation
    • https://fanavepuru.weebly.com/uploads/1/3/1/8/131871984/bavixararizoref.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/9b6e7aadaa78.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/xapidajovaji/muwatoboxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d12eebd-2f8a-4969-9e49-a09c40e5713a/88043700074.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7770436-da6b-48b8-a7eb-7f4147e65580/chuubos_marvelous_wish-granting_engine_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f010fb77-600a-46ba-a33c-41b269774695/area_of_a_circle_radians.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fde879f44058d21a0e474c5/t/5fdf9e83f11f517dbbde899a/1608490627611/catechism_for_filipino_catholic.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd05b200f7af3919d4ae01/1606223283115/xagafowojakemep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/443fca04-5272-429e-b0f7-9ee53d8bd2d8/82767438307.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fde96712dcd53187f20392d/t/5fdf80b8f5f64226565dd0e4/1608483000994/fairytale_alexander_rybak_piano_sheet_music.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcee9db7a66e04eaf3606b/1606217373817/livegezusimelusomur.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2e3d06b97992eb568e234/t/5fcfae4964290b1c3de2c87a/1607446089786/58319102821.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcee4934d27a4470988e4d6/t/5fd19456ad61ab583185148d/1607570518598/tinebafinipebegufisiru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efeb7fe3-175c-419b-86c5-c14482bbd553/mujoforitegig.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc38ae5bdb33045eed2d05a/t/5fd22998880fa23343dd4df0/1607608731815/amazon_prime_video_uk_service_status.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_off0000cfb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFB6 5548 bytes
SHA-256: d009915b3301462a3bfb6af50170306db8f61a7928c438dec27201db42f3eef1
font_01_sfnt_off0000e285.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE285 11052 bytes
SHA-256: e964f5514f4bc516879d8f55fef2c481e66c59efb228e8cf0a8b96ef83e59f76

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