Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2e7880958fa87a1…

MALICIOUS

PDF

72.5 KB Created: 2021-03-16 16:57:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 1abc972cfdfdee756a01a6a1f6e2cdb8 SHA-1: e79388aa31272e9eefe5310e179a3c82bc804424 SHA-256: f2e7880958fa87a1a3d6b6ca34db47bc019fc89acbad4ba4ce04581e4da48bc0
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many pointing to disposable hosting, indicating a link farm or phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious activity, likely aiming to redirect users to potentially harmful sites.

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://leonvi.ru/wix?keyword=hidden+potential+dokkan+awaken PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4468820/normal_601ae9a91a2f3.pdfIn PDF document text
    • https://wabegikabakupoz.weebly.com/uploads/1/3/4/6/134668284/6357919.pdfIn PDF document text
    • https://joxalazugadono.weebly.com/uploads/1/3/1/4/131437099/eee070d0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488555/normal_5fd3876f99522.pdfIn PDF document text
    • https://xuguxoxarakijob.weebly.com/uploads/1/3/2/7/132740494/xurozoperifebe.pdfIn PDF document text
    • http://kufowawixapiva.sportsontheweb.net/fabuwalinipasidolipewavi.pdfIn PDF document text
    • https://wusaveverafojiz.weebly.com/uploads/1/3/4/3/134338410/zakujavuvava-rituramasuviw-jefijolemamase-vonix.pdfIn PDF document text
    • http://zebozewazogaso.scienceontheweb.net/xalenojasibur.pdfIn PDF document text
    • http://gagimubu.mywebcommunity.org/75230852309.pdfIn PDF document text
    • http://vijexibat.mywebcommunity.org/54444529629.pdfIn PDF document text
    • http://ziposodepow.mywebcommunity.org/multicast_routing_protocols.pdfIn PDF document text
    • http://majusenise.sportsontheweb.net/95962274074.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://4dd4a32c-aced-41d2-87e6-7ff9ca8080d7.filesusr.com/ugd/6d6f33_a970020787e940579bfbbe23628652ab.pdf?index=trueIn PDF document text
    • https://6bfd3344-23d3-4e03-ab7d-00c1c23eecf6.filesusr.com/ugd/be19e1_2ec222e85be64f79bdecc80a0d5da064.pdf?index=trueIn PDF document text
    • https://486bfeb6-87d8-40a3-812f-3449909c9139.filesusr.com/ugd/81b904_d8a36be53e60495e9f9d5d298dca61a3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tevigotu/xazufowof.pdfIn PDF document text
    • https://s3.amazonaws.com/wivunonovef/hp_envy_4500_owners_manual.pdfIn PDF document text
    • https://fa5d8e44-005d-4c05-925d-ba60cb7f5023.filesusr.com/ugd/121e37_28b66f839f944a1a9ccb638488ad31e4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jipowumat/30381688957.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_off0000dea4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEA4 4796 bytes
SHA-256: 1c31991282d8b49f644a97a23ddb229082854e2bcd3276f29edb17c18565e9d9
font_01_sfnt_off0000ef17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF17 11184 bytes
SHA-256: 8afdc8364a8462fcf607ff429571cad84f5f7b59b155e825f796923b7102ba7c

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