Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2c0cda83032bf8f…

MALICIOUS

PDF

41.2 KB Created: 2020-10-04 15:11:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6862b9afa743bd66ca761260a451b06d SHA-1: b7d17df0d3b9f252701ce6e291254905277b6a21 SHA-256: b2c0cda83032bf8f040f8e56ad95603d268c3d67b3038246331e83a90ef31d1b
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://cctraff.ru/strik?keyword=key+cho+pdf+watermark+remover In PDF document text
    • http://files.bellaandpolly.com/uploads/1/3/0/7/130739457/d559e7df3.pdfIn PDF document text
    • http://files.suffolkpeanutfest.com/uploads/1/3/1/3/131381111/9451201.pdfIn PDF document text
    • http://turuzogun.thepromenadeatpelikat.com/uploads/1/3/0/8/130874384/xolaxa.pdfIn PDF document text
    • http://files.jeffdunntrombone.com/uploads/1/3/0/7/130776500/d87d256e41d0.pdfIn PDF document text
    • https://site-1037091.mozfiles.com/files/1037091/vozuw.pdfIn PDF document text
    • https://site-1036871.mozfiles.com/files/1036871/xadumiboruxokegiror.pdfIn PDF document text
    • https://site-1036635.mozfiles.com/files/1036635/97403285899.pdfIn PDF document text
    • https://site-1036815.mozfiles.com/files/1036815/31494513576.pdfIn PDF document text
    • http://lumekek.journeytoesquire.com/uploads/1/3/0/8/130873995/2928385.pdfIn PDF document text
    • http://ziwewise.thejordanhomestead.com/uploads/1/3/0/8/130814297/zapaxad-gerabuvikijobij.pdfIn PDF document text
    • http://files.whitewater101.com/uploads/1/3/0/8/130873851/f74d6d03.pdfIn PDF document text
    • http://files.lonestarpsych.com/uploads/1/3/1/4/131437636/jutuv-vuzupori-paxojimulano.pdfIn PDF document text
    • 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/2a7bd1c3-04b1-4503-8745-4d765e023fc2/63215386729.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/753feb5a-2f0b-4413-9fd3-1644d38128a5/gofifevejivugifowil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b3a0c83-63bf-49e9-b1c7-547d9e560db1/79667169002.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a91cbd42-f862-42e8-af8e-19838560d511/fugodoxemutusuvipavig.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_off000055ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55CE 5108 bytes
SHA-256: a2974994e68e95b3e8f957b0a1527c9da87b712cda72fc5bb91d0cd4d4d85075
font_01_sfnt_off00006743.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6743 10028 bytes
SHA-256: 483d6f9c7629e32916862abe1622408268d3653a6a0fefbaad01caf07a2bb5d8
font_02_sfnt_off00008991.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8991 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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