Malicious PDF — malware analysis report

Static analysis result for SHA-256 c252fb9047495eab…

MALICIOUS

PDF

183.6 KB Created: 2021-03-20 21:23:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6633fb177a13bafe992643162fe25e0e SHA-1: 2887011e111444c8e84ec38926cf970958678d05 SHA-256: c252fb9047495eab81deb9c2801358576f5030db2683c4016b78cf8a57513afd
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains and link farms, a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content, likely leveraging PDF vulnerabilities or social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 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://botokaw.ru/123?utm_term=captain+america+uniform+wikia
    • http://detonic-ufficiale.website/sefudexixukerajapogofg1y62.pdf
    • http://mklhhhh.space/pamilenawiog6op.pdf
    • http://komarovskii.xyz/letuzebuvupid0xz4f.pdf
    • https://cdn.sqhk.co/wupofolizaj/mXjfLij/le_mars_iowa_10_day_weather_forecast.pdf
    • https://jokilexagazoxo.weebly.com/uploads/1/3/4/6/134602179/2d874e075aac.pdf
    • http://coolmag.biz/old_brick_wall_vector_free34txs.pdf
    • https://cdn.sqhk.co/mivoteloxip/hcGHO20/sezujunowokuwuguvipon.pdf
    • https://rafutukeri.weebly.com/uploads/1/3/1/4/131453201/1844217.pdf
    • http://japancar-sib.ru/78682259578ryucl.pdf
    • https://pipamoximiketo.weebly.com/uploads/1/3/0/9/130969724/a87b2a09.pdf
    • https://jatilesaza.weebly.com/uploads/1/3/4/3/134316516/gadavetirinesa_lesemul.pdf
    • https://poxemitiwafu.weebly.com/uploads/1/3/1/8/131871555/5320487e.pdf
    • https://xevexotu.weebly.com/uploads/1/3/5/3/135309825/turufozizos-sunadigirajuwir-bidina.pdf
    • http://fasad-dom.site/bin_dosyas_indirrgsg3.pdf
    • http://vknacruckalaikov123.xyz/vertebrates_and_invertebrates_worksheets_grade_2pn3dq.pdf
    • https://cdn.sqhk.co/pesarukogi/6dDgdid/zitijikizome.pdf
    • http://eurozone.pro/rokosagozoxizewu5p7lc.pdf
    • https://cdn.sqhk.co/palazawu/pWjjG18/uzi_glass_breaker_pen.pdf
    • https://ranatugirebulox.weebly.com/uploads/1/3/4/0/134017659/f460d5238fc7c.pdf
    • https://zibinileder.weebly.com/uploads/1/3/4/7/134748255/6b446.pdf
    • http://inmyshtangen.xyz/pavokivusonititutonekejilis9c6.pdf
    • https://ritipovilij.weebly.com/uploads/1/3/4/6/134650849/nudulamugulurulapo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00028a4d.bin
f5d5f19f300d790f434e889580cb94a0d05f892aceec88f0790e9fcd82e464ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28A4D 5012 bytes
font_01_sfnt_off00029b5b.bin
f68eb2e307b9b6f3f712eacf785ce759916ac2e0bada20fe9a946a8c2eb70c01		 pdf-font-stream PDF embedded font (sfnt) at offset 0x29B5B 11580 bytes
font_02_sfnt_off0002c262.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C262 4324 bytes

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