Malicious PDF — malware analysis report

Static analysis result for SHA-256 651ce416ca8692a6…

MALICIOUS

PDF

67.4 KB Created: 2020-11-21 12:44:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: d1511fbd0b3c4e4ec3b5108c31b228c9 SHA-1: c3090e00fcfc37c2900417d131dc7950159599f1 SHA-256: 651ce416ca8692a6e798c589ff1ef0695536d1ce2d7e5eebcf5d1e7f0eaa07a6
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier. It contains a link farm with numerous external URLs, including one pointing to 'traffnew.ru', suggesting a phishing or malicious redirection attempt. The document's structure and embedded links indicate it's designed to lead users to potentially harmful websites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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.
  • 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://traffnew.ru/123?utm_term=topsail+middle+school+supply+list PDF link annotation
    • https://belafawejogawol.weebly.com/uploads/1/3/4/5/134583754/9074411.pdfIn PDF document text
    • https://zaxanedipujez.weebly.com/uploads/1/3/4/5/134582154/8c1e6903bfe8b.pdfIn PDF document text
    • https://jasazifo.weebly.com/uploads/1/3/1/4/131437377/4491830.pdfIn PDF document text
    • https://mogijoduvide.weebly.com/uploads/1/3/0/8/130814471/xebijofip.pdfIn PDF document text
    • https://reregixezoxo.weebly.com/uploads/1/3/4/4/134461721/4504751.pdfIn PDF document text
    • https://finolija.weebly.com/uploads/1/3/4/6/134625313/waribon-fixisagijesex-tuwifuvapedoka-mojego.pdfIn PDF document text
    • https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/telopubujixamivope.pdfIn PDF document text
    • https://luvuzinek.weebly.com/uploads/1/3/4/5/134502649/vejewutaxoza.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/8839eaf1-648e-4d5a-9a8c-92956b8f294e/veleg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2faa023-5b22-4579-b2e1-8c9c7cd760e4/folder_lock_registration_key.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/roblox_usernames_for_girls_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a96b06c5-a07c-49cb-a93c-3ce1d05f5131/89389993927.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/164e9e53-f105-4fe4-8449-2f39e5c5d09f/bowigubufapekojizide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fb67214-ce55-41cd-8ef8-e12a1e68e07c/kesitalaboxixukoxero.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63f24d2e-eb29-4be1-a6ab-e5536aaf930f/o_christ_the_healer.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_off0000c9ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9CE 5268 bytes
SHA-256: cfb56f9a0ebaf66b9baad984cf512152d85e9a113c4521a3ee1254c65ea1d864
font_01_sfnt_off0000db98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB98 10860 bytes
SHA-256: 912a8d814c3706b3490ac662cfc1152c3a2f4cef130b1f001d92c5c4eef05471

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