Malicious PDF — malware analysis report

Static analysis result for SHA-256 67cab8b3d952c467…

MALICIOUS

PDF

71.0 KB Created: 2021-03-07 10:03:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 52fc92a2b16ba868106e7179b7afbe56 SHA-1: c86c11a76e67b2c88653b8a9a3e0a94c2e12ca98 SHA-256: 67cab8b3d952c467e795ee5ee16e054db3741ae639c73694fe4466d16ec136fa
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external links, many pointing to disposable domains, suggesting a link farm or phishing operation. The embedded URL 'https://xezojetit.ru/award?keyword=ge+phones+support' and other PDF links like 'http://grandov.pro/31404977340ea5nm.pdf' are indicative of attempts to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://xezojetit.ru/award?keyword=ge+phones+support PDF link annotation
    • http://grandov.pro/31404977340ea5nm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479235/normal_6009862037eac.pdfIn PDF document text
    • http://cmb-accueil.com/34172463504289d6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369518/normal_5ff5afd02ceaa.pdfIn PDF document text
    • http://art-practice.org/18324679115zy5p.pdfIn PDF document text
    • http://cosmostil.top/lovimafamilulewufukvcj7j.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377656/normal_6033cd7865d21.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480423/normal_5fc599879abc7.pdfIn PDF document text
    • http://wssummer.space/acdc_highway_to_hellhlmdf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419836/normal_5fcf375724df6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://c6de0af5-2a4c-46da-924c-839bccb102c6.filesusr.com/ugd/5f1f0f_4e3092124ea34cc48fdca4edf5e13bda.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/71570959342.pdfIn PDF document text
    • https://fe2b84af-b373-48e0-a714-f820169e3fe9.filesusr.com/ugd/ed1d2e_28340725e54a424da64189634d4ebad1.pdf?index=trueIn PDF document text
    • https://48e4e0df-78ce-4736-8797-27735e68dc67.filesusr.com/ugd/f3b179_8d37d53f315f479a95f11b51eed5382f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/how_much_does_a_cdl_cost_in_oklahoma.pdfIn PDF document text
    • https://s3.amazonaws.com/nodetuxapabara/blender_tutorials_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/19090654598.pdfIn PDF document text
    • https://3e3188f7-d9e9-48da-9af6-4e6760718ee0.filesusr.com/ugd/4f7562_d432af447f7f41c4b3a52e0730f89adf.pdf?index=trueIn PDF document text
    • https://5fb42ee6-a9be-400a-98f2-f9d4b9f720c8.filesusr.com/ugd/1813b3_14df95caaffd4f8c9037ec4b67c294ed.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/legenapi/anvil_studio_manuale_italiano.pdfIn PDF document text
    • https://254a6a59-343e-4b7e-907c-c4819e171fff.filesusr.com/ugd/decf6f_970aa34e2c5748febc20bb03072fa602.pdf?index=trueIn PDF document text
    • https://19aaccd0-9772-41b6-85c4-be118606641a.filesusr.com/ugd/a12125_199f614d08274f2582a27cb5fb5cc6ca.pdf?index=trueIn PDF document text
    • https://989244f3-426d-4557-b4f1-0018dac9047c.filesusr.com/ugd/57c819_449b159ee0c74035a14b2c94f6e648d7.pdf?index=trueIn PDF document text
    • https://5c2df1de-05ea-4e17-9aa3-38adc7ce3153.filesusr.com/ugd/ddd609_285d9f1a89c04ef789f12327e68e62ca.pdf?index=trueIn 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_off0000dba5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBA5 4696 bytes
SHA-256: cadac946b7f32a23de25306d2207a7ca61395e10c0e7e6ba53bcb54ff805373e
font_01_sfnt_off0000eb9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB9C 10136 bytes
SHA-256: ccbf2a43c7857a792c8d8a06c0386e4657eb12b2b99a16ad707b03bc933a1b18