Malicious PDF — malware analysis report

Static analysis result for SHA-256 e876c2324c181ae4…

MALICIOUS

PDF

76.0 KB Created: 2021-04-17 10:25:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: c78f73b6c548e5a0af10f5be55837d38 SHA-1: 9406c59d989fdf6a47790c366006c3d265e8f3c3 SHA-256: e876c2324c181ae4839facdfeaf3234c86c2bcbdbf226047bb3b7d6c2c13317f
126 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified as a phishing attempt by ClamAV and ML classifiers. The document body, though heavily obfuscated, suggests a lure related to audio devices, aiming to trick users into visiting the malicious URL. No scripts were extracted, but the presence of external URIs and the high confidence of malicious detection indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://jumiwimov.ru/strik?utm_term=how+to+connect+ihip+soundpods PDF link annotation
    • https://givigifug.weebly.com/uploads/1/3/4/8/134858651/zotakibufel-riwesajol.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389097/normal_5fe5ed129241c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394060/normal_606d5b409f486.pdfIn PDF document text
    • http://newberginvestmentproperty.com/gitoxowewokixiranirefarqx2g.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379851/normal_60687f698fe02.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386607/normal_6008663248952.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463560/normal_5fe4da5494bdb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370051/normal_600dbc5bb64de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369927/normal_60450c199f350.pdfIn PDF document text
    • http://sajitalunaded.22web.org/noxewilebi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487382/normal_5fcd123c5436b.pdfIn PDF document text
    • http://meetraisins.club/20843254728v5u03.pdfIn PDF document text
    • https://zuwojutiraz.weebly.com/uploads/1/3/4/7/134729165/rariwitarola_toboxidolil.pdfIn PDF document text
    • http://veronaital.space/gry_online_ball_hero_adventure_red_bounce4jnkq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453334/normal_5fd60e3c3f5b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424009/normal_5fda1d525df9f.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/zarusegibitumet/chick_corea_spain_sheet_music_piano.pdfIn PDF document text
    • http://natexaz.rf.gd/dewalt_3400_psi_pressure_washer_repair.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/ben_10_galactic_champions_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/xevofujelirelamo.pdfIn PDF document text
    • https://s3.amazonaws.com/suxuzubojut/84396046299.pdfIn PDF document text
    • http://tibopogezife.rf.gd/66711289637.pdfIn PDF document text
    • http://kopedug.epizy.com/lirekexitozaz.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_off0000ec22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC22 4876 bytes
SHA-256: 9a81793da065ec1c7c2d7fd0bd89203f75aa8df6def57eb30337dc86fa5062cd
font_01_sfnt_off0000fccd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCCD 11148 bytes
SHA-256: 82b08812ff46978dc91a7a58c43f50931c444a36e68e25a289139d4e8a6ec62d

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