Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1181040a6a56404…

MALICIOUS

PDF

85.3 KB Created: 2020-11-25 01:41:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 24f8ecf39b0b87e110a573955644fedd SHA-1: 70371708c89854cb74ad9fe26f10cd387ba75d22 SHA-256: e1181040a6a564048e75cda5bbf17475b0d19cf98d6ba6c84058f68fae62d4cb
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many pointing to disposable hosting services, indicating a link farm or phishing attempt. The 'Cartoon Network Canada Games' lure in the document body, combined with the ML classifier and ClamAV detection, strongly suggests malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffe.ru/strik?utm_term=cartoon+network+canada+games PDF link annotation
    • https://gumomamomav.weebly.com/uploads/1/3/1/3/131398069/dd224ed8fef.pdfIn PDF document text
    • https://dizakevusarebiz.weebly.com/uploads/1/3/4/5/134581037/nevotaladivuma_jakuteti_lezezitijos.pdfIn PDF document text
    • https://kiseridebajesa.weebly.com/uploads/1/3/1/4/131408791/fowavawimop-jubozaxudukoxu.pdfIn PDF document text
    • https://wajiresejepo.weebly.com/uploads/1/3/0/7/130774962/69a06c8736.pdfIn PDF document text
    • https://zisokilusativ.weebly.com/uploads/1/3/2/3/132303079/pedumip.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/5d6eb7.pdfIn PDF document text
    • https://pukogapuwobar.weebly.com/uploads/1/3/4/3/134307851/kuzikejubaxikok.pdfIn PDF document text
    • https://tanaxafim.weebly.com/uploads/1/3/4/5/134501517/buvupizoxefuj_vuxid.pdfIn PDF document text
    • https://kutowovazamil.weebly.com/uploads/1/3/4/3/134362820/e5df55.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/16965fd7-dfd4-4667-a0f6-6690cd9a3c0d/mefawoxonetiwavanez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9eda680e-3358-45eb-8fbd-bbf68ee32165/how_to_get_naydra_s_horn.pdfIn PDF document text
    • https://s3.amazonaws.com/nademopor/telijopasovuwakebomimi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e36e1b1-de34-48e8-8546-a5260e3efbb4/jaxokalepupoperojanusun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15669513-f63c-44d3-9407-0f3d07227ef7/faxojomuwenovolotetijubi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/131fdaac-e037-4636-9e1d-389166652957/videozal.net.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_off00010d5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D5F 5288 bytes
SHA-256: 8f71832359b327d9240c588c1181eeb3100d7b19faf6d75580f011f4dcba313e
font_01_sfnt_off00011f5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F5C 12344 bytes
SHA-256: 626992314cc4d939c814150f19c44e6342a952d2f2832fe30eb6dd1e21c0c27e

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