Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e8e50a41e9cb4f0…

MALICIOUS

PDF

68.3 KB Created: 2021-01-06 17:57:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 8fe8021c054fa4b3217d8b29f788903f SHA-1: 686cfe1bd5ebdf8dd046c0c57f006fe0060b0bc0 SHA-256: 7e8e50a41e9cb4f0809c1cade3d24e342eff09d1deef7cc65f0c876b4b827230
244 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to disposable hosting services and redirectors, indicating a link farm designed to distribute malicious content. The primary URL, 'https://traffmen.ru/123?utm_term=watch+super+bowl+2020+stream+online', suggests a lure related to streaming popular events. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://traffmen.ru/123?utm_term=watch+super+bowl+2020+stream+online In PDF document text
    • https://fozipomeripimak.weebly.com/uploads/1/3/4/6/134610298/d093ff58d273513.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369663/normal_5fee91ae71102.pdfIn PDF document text
    • https://dawemewi.weebly.com/uploads/1/3/4/7/134747996/tuwivube.pdfIn PDF document text
    • https://tavadubamik.weebly.com/uploads/1/3/4/4/134473349/lisari_puzutubinonifim_misurutubipenef.pdfIn PDF document text
    • https://digaporabanezaf.weebly.com/uploads/1/3/4/6/134689005/2048803.pdfIn PDF document text
    • https://xawiwewediwo.weebly.com/uploads/1/3/4/0/134017039/3061972.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376599/normal_5f9aa0aad0165.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367281/normal_5f9e2b1692e8b.pdfIn PDF document text
    • https://kozesetod.weebly.com/uploads/1/3/4/5/134507136/difoduk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366015/normal_5ff3eb8a0f90f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d9c2e48-3dc7-474f-99ce-0202b329336e/zinuwinadadeboxidazi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9206967-d033-4fb1-b50f-a943f94b3437/wetubegatogaxu.pdfIn PDF document text
    • https://s3.amazonaws.com/zatasipezeg/technical_documentation_template_confluence.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bcab355-912e-48f7-be1e-6f42d85ec6ec/3ds_max_2016_crack.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13618a0f-ee07-42de-bae7-54719df57806/62869102645.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_off0000cb28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB28 5692 bytes
SHA-256: b8d3f762e4f17ff5cd7fa34596078f175bdd1c73d988db4d64c80ef036b822b9
font_01_sfnt_off0000de73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE73 11060 bytes
SHA-256: 8fe7f6e1a3f0890727d3bda0b820e6398ece1694a08e19bc9126d38eb63b18bf

Open this report in the interactive analyzer, or submit your own file for analysis.