Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e76c6f84e3841ab…

MALICIOUS

PDF

60.0 KB Created: 2020-11-14 00:18:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b31408d925a011b49a8db0d98433f30d SHA-1: 9f36f31f2d43428a98865e0fae57b212040a49d9 SHA-256: 8e76c6f84e3841abf371cd698c76482e192017406c15f9644fa1bbf92a006a24
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a significant number of external links, identified as a link farm, with a primary URL pointing to 'traffine.ru'. ClamAV detection and ML classification strongly indicate maliciousness, specifically a phishing or trojan threat. While no scripts were directly extracted, the PDF structure and embedded URIs suggest an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffine.ru/aws?utm_term=phyno+one+chance++mp4 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393751/normal_5f90553db3bdd.pdfIn PDF document text
    • https://veraroligesabo.weebly.com/uploads/1/3/4/3/134377370/diwigiligijesuzazoj.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/ef241307-ff50-4e31-86bd-5bff5f2cac64/perfect_webinar_script.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/23320113172.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/ranedobonosabuxusaw.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/ruwowa.pdfIn PDF document text
    • https://s3.amazonaws.com/wejalixex/eso_under_siege.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/beede1e4-92d0-43f4-b43d-3566674b7c17/vw_golf_tdi_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/kafavogosedan.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/95698724999.pdfIn PDF document text
    • https://s3.amazonaws.com/putelekireza/origins_of_totalitarian_democracy.pdfIn PDF document text
    • https://s3.amazonaws.com/piwanisaj/neridum.pdfIn PDF document text
    • https://s3.amazonaws.com/muvunekagok/kuxogosusixagagip.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_off0000afe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFE1 5056 bytes
SHA-256: 250d8ee2ae3ba1a792fb76627aca73578adde728f9eb17fe14cbe1540ca806a8
font_01_sfnt_off0000c103.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC103 10164 bytes
SHA-256: 28ccdf8f78827718cacfc6035ea469e51c3d4ae72bcf8927c752310da4729186

Open this report in the interactive analyzer, or submit your own file for analysis.