Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7d2a5b33d67102e…

MALICIOUS

PDF

102.8 KB Created: 2021-03-14 03:13:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: e5245c950f7896a0f3adf31218f3ab27 SHA-1: 9a6379e484a090adaf49157acd261d382f862b38 SHA-256: c7d2a5b33d67102e77411964421504d3d6050f9f4b6676a3e374d3bca49518e8
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, contains keywords related to game cheats, likely serving as a lure.

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://ponafet.ru/wix?keyword=battle+brothers+cheat+engine+experience PDF link annotation
    • http://tersq.fun/35033195459t66y5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458404/normal_5fd1d17413395.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415543/normal_602907d379cdc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366676/normal_6013c3e536800.pdfIn PDF document text
    • http://magnetfix.store/pediatric_head_trauma_ct_decision_guidel4otf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410204/normal_6006616dd5dc6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414173/normal_60485ae50fe97.pdfIn PDF document text
    • http://vijufik.iblogger.org/vesib.pdfIn PDF document text
    • http://prestige-air.space/49807167775iiiwq.pdfIn PDF document text
    • http://svoylend.xyz/jolurowanefiwokemedekakaw34eoy.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://dc383e6d-b7a3-4e67-a88a-227fa542b6c3.filesusr.com/ugd/72b0e7_9e0a541e34644cdc829be9b770e32688.pdf?index=trueIn PDF document text
    • https://a79fbd7c-12a6-44fe-9d3c-43dc2b0795a8.filesusr.com/ugd/f95141_e398822fe5844862b3d6b3a751fa50e8.pdf?index=trueIn PDF document text
    • https://ca483b97-61ac-4196-bca0-6b249c18eca9.filesusr.com/ugd/b27199_6c7a58b88b564e30bc63ee98932a5b5c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/67b198f6-75c2-4719-9585-1db15de1937c/how_do_you_make_pizza_dough_in_a_bread_maker.pdfIn PDF document text
    • http://duguteterexu.epizy.com/62670641160.pdfIn PDF document text
    • http://ganasoniledaw.rf.gd/qtp_automation_testing_interview_questions_and_answers.pdfIn PDF document text
    • http://podijasopasul.epizy.com/recirculating_aquaculture_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d23f935f-1771-418b-a752-09f637b862cb/momogapenujaniro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c161fac9-d99a-4e68-bd02-375d3ca5b81f/vebupaguxilotisixedivolev.pdfIn PDF document text
    • http://fulapokop.epizy.com/7953816504.pdfIn PDF document text
    • https://b2d1eea7-aef5-47fc-962c-88b5513ecafc.filesusr.com/ugd/3a57bc_6d77026ed98e4d758c7c5d195cae0068.pdf?index=trueIn 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_off00015041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15041 5452 bytes
SHA-256: 0d7703f6997358b552bc385eb10b316d3082efcbbd710ab15ed31ed0179f7d3b
font_01_sfnt_off000162c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x162C8 12176 bytes
SHA-256: d91c56e77e2a11f7c352f56de1278bd5fd1d5cccfe7991f1336716fc595325ca

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