Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9cc75b5dde24a2d…

MALICIOUS

PDF

92.1 KB Created: 2021-03-04 06:20:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 4c1751df2fb96ad34ff41e610171384a SHA-1: 181f58de16a06c70d2f16c3e8c64988f084a9ef0 SHA-256: a9cc75b5dde24a2d14b582e0369adb4e2ffe23f3fdfb8d0eb9a93b768e6426a7
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent URL suggesting a lure related to 'video player for windows xp sp2'. The presence of multiple disposable domains and link farm heuristics indicates a deliberate effort to redirect users to potentially harmful content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://soxebez.ru/wix?keyword=alr+meaning+in+banking PDF link annotation
    • https://cdn.sqhk.co/juzivadareka/siaqjaO/video_player_for_windows_xp_sp2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457620/normal_601558bd19d3f.pdfIn PDF document text
    • https://cdn.sqhk.co/dawadetugas/sYJohga/tufotifobovitu.pdfIn PDF document text
    • http://girlsbeach.space/vocabulary_for_first_certificate_vk9zlv5.pdfIn PDF document text
    • https://cdn.sqhk.co/jimumakevaji/iex3Oic/gejokupiritabenuxi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4506131/normal_5ff012541ad56.pdfIn PDF document text
    • https://cdn.sqhk.co/zodozane/hjVokoX/berenixutakiwezewa.pdfIn PDF document text
    • http://ecosbor.net/2008_ford_escape_transmission_swapa49wv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424982/normal_5ff380bd90ce5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://sepimenixinu.epizy.com/harry_potter_and_the_chamber_of_secrets_book_review_essay.pdfIn PDF document text
    • http://gemebewi.rf.gd/donok.pdfIn PDF document text
    • http://bomepexajusopa.epizy.com/abp_ad_blocker_free_for_chrome.pdfIn PDF document text
    • http://nutujetis.rf.gd/89929837918.pdfIn PDF document text
    • http://rawisedifagi.epizy.com/zoleg.pdfIn PDF document text
    • http://jumezasaguruwu.epizy.com/bomugebebegidavil.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000121d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121D2 4616 bytes
SHA-256: f14cd928dfecc6d6cd4e4b5b6b1b1441f95eb272c83bc04376676ef4d555a955
font_01_sfnt_off0001314d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1314D 10500 bytes
SHA-256: 1957326e2909a85ff38bc82147ef6e55b711c6393fde0139467be52fefdbf30c
font_02_sfnt_off00015540.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15540 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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