Malicious PDF — malware analysis report

Static analysis result for SHA-256 c67449c054ca077c…

MALICIOUS

PDF

70.4 KB Created: 2020-12-24 17:29:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 0f3ff16469f06d3c199af29a63ca49af SHA-1: 7281e4ee165b5fa39e144b9aa7ad733f2023cc22 SHA-256: c67449c054ca077c7c22f71400b0fe200bbf40dc0aa90f36c7a50e6ab61c7d18
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious and likely phishing-related. It contains numerous external links, with a primary suspicious URL pointing to 'trafficel.ru'. The PDF also includes a large number of embedded links, suggesting a link farm or SEO poisoning attempt to drive traffic to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafficel.ru/strik?utm_term=ivar+vikings+wife PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4451762/normal_5fdc6b5e15f2c.pdfIn PDF document text
    • https://zabemogir.weebly.com/uploads/1/3/4/0/134016966/kogubutag_pagupota_bebademukilij_gedani.pdfIn PDF document text
    • https://vimugowome.weebly.com/uploads/1/3/4/3/134323071/karafopusi.pdfIn PDF document text
    • https://tukuboxux.weebly.com/uploads/1/3/4/5/134510407/texivokirunog.pdfIn PDF document text
    • https://lopiranurepo.weebly.com/uploads/1/3/4/7/134735856/poxavepejunugimodawe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418399/normal_5fca664896e30.pdfIn PDF document text
    • https://wotafoxig.weebly.com/uploads/1/3/4/3/134306194/4427957.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/jezobasit/97101838677.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/audio_clip_from_messenger.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/duromax_xp10000eh_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51b45ff9-2a10-4fcc-b0ba-44af5a643d6c/cuisinart_automatic_grind_and_brew_manual_dgb_550.pdfIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/refixadozebadosovowu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6610b54b-e2fc-4abe-8418-66c3f51bd841/wifotojabaxubadasev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1db21f5-b461-4fdd-a581-cefb21578f13/depevexetijevuxalotase.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_off0000d7b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7B1 5056 bytes
SHA-256: 9263c5b46e1971e074e4b010cf4d7d0b82c99861db7811023389fd76ccf037e3
font_01_sfnt_off0000e915.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE915 10600 bytes
SHA-256: 61e7125b5bff7a46e1f8a27b9fff4e6bbcd3f030a60c0d87bd5b25c6cc5f850b

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