Malicious PDF — malware analysis report

Static analysis result for SHA-256 fda8eb8350e589a5…

MALICIOUS

PDF

79.2 KB Created: 2021-03-25 11:49:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7caca28f0d66aecc3b75fd87dcde8b01 SHA-1: 736a5c0d0498c9240baca2adb810cd96359ca6d2 SHA-256: fda8eb8350e589a5da0aa8980b101cd38c7f7b9e169292f32fee5ed8cd34c6c8
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, a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM suggests the document is designed as a link farm, likely to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://mezovuduw.ru/123?utm_term=poetry+analysis+essay+format
    • http://zekabor.iblogger.org/19562239630.pdf
    • http://bagezokazuraw.medianewsonline.com/luzizaluzimonafetolovo.pdf
    • https://static.s123-cdn-static.com/uploads/4485318/normal_5ff2b971e5f67.pdf
    • http://romodiresabujum.22web.org/mejudolipoxabifonemas.pdf
    • https://cdn.sqhk.co/tefulobesa/ei6Ijh9/dovotobewesuvikupurij.pdf
    • https://cdn-cms.f-static.net/uploads/4491153/normal_6044d89644d30.pdf
    • https://cdn.sqhk.co/fejisedetu/setXheH/sawotolodo.pdf
    • http://wawesoja.sportsontheweb.net/character_reference_letter_for_immigration.pdf
    • http://tukudetu.iblogger.org/samsung_wf350anw_xaa_capacity.pdf
    • https://cdn-cms.f-static.net/uploads/4370525/normal_603460a9b6f9c.pdf
    • https://cdn.sqhk.co/kogewole/lid0zhc/lausanne_2020_youth_olympics_schedule.pdf
    • http://filitopalanima.22web.org/86538480002.pdf
    • https://cdn-cms.f-static.net/uploads/4412599/normal_602858646b260.pdf
    • http://rozefuzapotor.iblogger.org/cisco_router_commands_cheat_sheet.pdf
    • https://cdn.sqhk.co/kimejijomaki/e8cljiD/72400370189.pdf
    • https://cdn.sqhk.co/lisakopew/f5ja8bC/91604464889.pdf
    • http://gikodarekegov.mywebcommunity.org/latex_beamer_includegraphics.pdf
    • https://cdn-cms.f-static.net/uploads/4416787/normal_605c4ed07fd9d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bexawiturefu.epizy.com/matew.pdf
    • http://melamodusede.rf.gd/hegemoni_amerika_serikat.pdf
    • https://18b62485-dce0-4e35-9712-b1d1f13fcb23.filesusr.com/ugd/296484_e5930bd0bc3f49a8b1ff67e494004e40.pdf?index=true
    • https://a8fdb364-3865-4521-a36b-e12f4de7752f.filesusr.com/ugd/e20637_c8c578cdd28f4bcb82bd0bbcd3f1c2ad.pdf?index=true
    • https://df9240ce-57b4-430e-a582-521170ca5232.filesusr.com/ugd/10b03a_d8a707cbeedb48bd9061e18d13b6fda4.pdf?index=true
    • http://jokodakive.onlinewebshop.net/3814179868.pdf
    • http://mezexefobotero.epizy.com/79602641148.pdf
    • https://39c1d623-eccb-4af0-a86a-15328a2d61f9.filesusr.com/ugd/3cb6cb_f3d6cde828984a2aaf8da592e0d998d0.pdf?index=true
    • http://pepudujer.epizy.com/checkpoint_ccsa.pdf
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fa3e.bin
e8a2a53bceb4afc0fcedce45dc64ebcbaff4c86fdcd7fc890a69e1703251f8c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA3E 5016 bytes
font_01_sfnt_off00010b3f.bin
75f26ae0bb2ad99a982b139f088eaca4ab3e096cbc716bd47d1be9bdae077b38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B3F 10624 bytes

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