Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7262652a66a5595…

MALICIOUS

PDF

85.7 KB Created: 2021-03-20 22:48:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: b5bf4a89b39ec107f139fd6f2a2e6fb7 SHA-1: aabea8c9fd688ef608bb3fc648755045a4a24e33 SHA-256: f7262652a66a559516a2ff50a6035a9e0c829b6cf41b1d559c544f87fcfaedef
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://vilenefex.ru/wix?keyword=jos+leduc+vs PDF link annotation
    • https://xuvetopugoseja.weebly.com/uploads/1/3/4/4/134484667/zugaxov.pdfIn PDF document text
    • https://biwakegexenulu.weebly.com/uploads/1/3/4/4/134437141/3878845.pdfIn PDF document text
    • https://cdn.sqhk.co/vasozaponem/ijh3har/the_war_for_the_west.pdfIn PDF document text
    • https://verijijul.weebly.com/uploads/1/3/4/8/134861220/pamenidetovimitexuma.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384639/normal_60160e28212e8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451932/normal_5fde6f1e726e0.pdfIn PDF document text
    • https://cdn.sqhk.co/sidogorego/ao0Dji8/suregubalojeriwavozivizum.pdfIn PDF document text
    • http://lejebodaz.22web.org/bosch_wiper_blades_catalog.pdfIn PDF document text
    • https://nobakavukip.weebly.com/uploads/1/3/4/3/134373074/6e583.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446765/normal_5fe3323ba6302.pdfIn PDF document text
    • https://cdn.sqhk.co/nurijodefa/gidgcUh/call_of_duty_warzone_tournament.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413008/normal_6025a26d8082a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415742/normal_60433c6e962a7.pdfIn PDF document text
    • http://siwutasir.iblogger.org/english_jumbled_sentences_with_answers.pdfIn PDF document text
    • http://fufumizajo.22web.org/39022568023.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc723c77-ea8e-4c2a-b5dc-f245ef14e04f/asus_dsl-ac68u_aimesh_ac1900_adsl.pdfIn PDF document text
    • http://rivelivujunas.rf.gd/whirlpool_duet_front_load_washer_drain_problem.pdfIn PDF document text
    • http://duximamezuzef.rf.gd/3896690279.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bee4312-0088-491b-8331-522827bafd01/76967024272.pdfIn PDF document text
    • http://joriboka.epizy.com/nupurog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1490091d-e188-4369-8947-c4c385aabd02/kenmore_he2_gas_dryer_control_board.pdfIn PDF document text
    • http://dunupilopun.epizy.com/13789469757.pdfIn PDF document text
    • http://zegemipufe.epizy.com/zefege.pdfIn PDF document text
    • http://rosodojilu.rf.gd/riwerase.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_off00011440.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11440 4676 bytes
SHA-256: 2837c4ef7fd734ea4431551f0fd159e36c6660209683e691a6652edb8e84a535
font_01_sfnt_off0001243f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1243F 10968 bytes
SHA-256: 2f5694d554754e65b287c30861d06fec8f5f0924649b5cf004ec2796ac34eac0

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