Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc77e812505f40e0…

MALICIOUS

PDF

93.5 KB Created: 2020-11-10 08:04:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: a055f9f1a6d9cd3059dfef702a469fca SHA-1: b821e184cc8129986dc5a259152c5bf17a67bd5d SHA-256: fc77e812505f40e02ce739ff30e5519e0a4aa95751164b593cc1826424df413b
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one specifically pointing to a "gangstar vegas money hack" lure. This suggests a phishing or scam attempt to drive traffic to malicious websites. The presence of a PDF link farm heuristic further supports this, indicating an attempt to manipulate search engine results or distribute content broadly. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://trafftec.ru/123?keyword=gangstar+vegas+money+hack+no+verification PDF link annotation
    • https://danawejenig.weebly.com/uploads/1/3/4/4/134499985/6657705.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383138/normal_5f8ca8bfcd37a.pdfIn PDF document text
    • https://vavuxajibibugu.weebly.com/uploads/1/3/4/4/134472661/6fa6f83.pdfIn PDF document text
    • https://bijoxopibomer.weebly.com/uploads/1/3/4/3/134325560/lamuninim.pdfIn PDF document text
    • https://fiselowozol.weebly.com/uploads/1/3/4/3/134366189/3691395.pdfIn PDF document text
    • https://xoniwolujejusun.weebly.com/uploads/1/3/4/4/134456196/9652640.pdfIn PDF document text
    • https://rodekimixew.weebly.com/uploads/1/3/4/3/134314341/8051689.pdfIn PDF document text
    • https://pomudada.weebly.com/uploads/1/3/4/3/134382041/rebanezagabaxig.pdfIn PDF document text
    • https://vewutaniwem.weebly.com/uploads/1/3/0/8/130873717/b4be8a4f7.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/kopisigapub/33399674875.pdfIn PDF document text
    • https://s3.amazonaws.com/jazofi/help_spay_and_neuter_newnan_georgia.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/47480382745.pdfIn PDF document text
    • https://s3.amazonaws.com/mafavuzenoliki/4.8_vs_5.3_mpg.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_off00012f49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F49 5520 bytes
SHA-256: 18cd1cdaaf1fe3b702d1394e08d2bbfce453711edffff6c4cf609aa9efa2001a
font_01_sfnt_off000141fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141FE 11484 bytes
SHA-256: 0a4cc528f08555bc7967e9704ed13e28ee81748b9c190dae81d770dd31972479

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