Malicious PDF — malware analysis report

Static analysis result for SHA-256 00c2a535d58db66e…

MALICIOUS

PDF

74.6 KB Created: 2021-04-27 09:15:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c7275959b79c9f0aac77dc6451d06b81 SHA-1: 51c769023a57a118f755f3a258dd7f0b30e29277 SHA-256: 00c2a535d58db66e9241361f1bbb0b8c8f693322ba27d04cfabf3c679e1db3e4
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 or trojan variant. It contains numerous external URLs, many hosted on disposable domains or link farms, suggesting an attempt to redirect users to malicious content. The presence of embedded URLs and the heuristic indicating a link farm on disposable hosting strongly support a phishing or malware distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/strik?utm_term=how+to+put+the+filter+in+the+keurig
    • http://banki-internetowe.com/gisibak3gdc9.pdf
    • https://velotukuzikud.weebly.com/uploads/1/3/4/7/134722024/dcaa43.pdf
    • https://pareniwidof.weebly.com/uploads/1/3/5/3/135313819/pitofazadedomitol.pdf
    • http://dream-stat.ru/imperfetto_o_passato_prossimo_italianoghonu.pdf
    • http://study-english-05.site/ligoraxijafujodn6h87.pdf
    • http://megatorg.ru/pididowinakuxil2aeo1.pdf
    • https://jelalepoxona.weebly.com/uploads/1/3/4/9/134901657/welafujeluge_dagepenaropi.pdf
    • https://cdn-cms.f-static.net/uploads/4496404/normal_6013e1ad214d5.pdf
    • http://bu-markett.com/fujitsu_fi-6130_paperstream_capture_downloadm6qdr.pdf
    • https://cdn-cms.f-static.net/uploads/4464330/normal_60557f4344bc2.pdf
    • http://lynciguest.com/cracking_the_coding_interview_6th_edition_githubpwk7k.pdf
    • https://silajawa.weebly.com/uploads/1/3/4/3/134339193/fff187830f.pdf
    • https://vixijusodu.weebly.com/uploads/1/3/0/7/130776714/gilorobamu.pdf
    • https://cdn-cms.f-static.net/uploads/4484835/normal_60604c879b894.pdf
    • http://yourcy.com/guidewire_testing_jobs_in_coimbatorekvjrk.pdf
    • https://cdn-cms.f-static.net/uploads/4366623/normal_601fab379fbc8.pdf
    • https://folugaso.weebly.com/uploads/1/3/4/5/134503816/welakiguw-kururonet-merutexosimelul.pdf
    • https://lemusudavigi.weebly.com/uploads/1/3/5/3/135395292/povamu-vomilixobefoba-dekaz.pdf
    • http://wordsideget.top/10._snf_corafya_konu_anlatm_indzn7e6.pdf
    • https://disefiduwixa.weebly.com/uploads/1/3/5/9/135981448/941563.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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_off0000e7e6.bin
14cb8b9fe064319e0fa784d4a37956669b1d7647bfb72b96011d148a0eae2a17		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7E6 4892 bytes
font_01_sfnt_off0000f89c.bin
98a6701333736bcc1188933d7c3d3c03e7251458be355d5ebb744fb68ed0d683		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF89C 10900 bytes

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