Malicious PDF — malware analysis report

Static analysis result for SHA-256 29a45f1f8b1424c0…

MALICIOUS

PDF

67.0 KB Created: 2021-02-10 08:54:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 43d2487b149cfecbff47446dcb29078c SHA-1: eb05e469b17cb834c3abee2a168f4a16d1d2475c SHA-256: 29a45f1f8b1424c0ed58a7103cd8ab933c254ccac68cc45ffb12b8c803c52dfb
226 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a phishing lure, specifically a payment redirection scam. It contains a large number of external links, many hosted on disposable domains, designed to redirect users to potentially malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to facilitate the download or redirection to a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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://maypoin.ru/aws?utm_term=anonytun+pro+apk++free PDF link annotation
    • https://luragelekow.weebly.com/uploads/1/3/4/3/134377287/tinamewoj_wozifereli.pdfIn PDF document text
    • https://sedanafijokam.weebly.com/uploads/1/3/4/8/134888359/8ad87.pdfIn PDF document text
    • https://jipuziloki.weebly.com/uploads/1/3/2/6/132695969/83f48f31.pdfIn PDF document text
    • https://lobogisotu.weebly.com/uploads/1/3/4/8/134870795/dafukufulilovijoxek.pdfIn PDF document text
    • https://bugebapujeze.weebly.com/uploads/1/3/1/6/131606260/34fea89c570426c.pdfIn PDF document text
    • http://garakimawavi.22web.org/seterul.pdfIn PDF document text
    • https://benesigonej.weebly.com/uploads/1/3/1/6/131607635/ecfac.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/wegemebufojafak/jesatilivipike.pdfIn PDF document text
    • http://jovawat.epizy.com/household_budget_worksheets_free.pdfIn PDF document text
    • https://s3.amazonaws.com/getizar/electric_wood_burning_with_microwave_transformer.pdfIn PDF document text
    • http://fugebuxojawuris.epizy.com/fishway_design_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/76603481850.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c4bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4BF 4840 bytes
SHA-256: 0f37fb449925d40153c8c5e187f835252a6a409200840c71fe20d7a9ad7d1dc6
font_01_sfnt_off0000d559.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD559 14736 bytes
SHA-256: afa8b93f05ebeec90904bef0ed3ca65523f0a2d80e42aa86353e6a0c9023b87a

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