Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7d60a9e4482d8ad…

MALICIOUS

PDF

88.1 KB Created: 2021-03-15 04:18:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 554685907c42603457d174c6865fbc8b SHA-1: 6d9272240d97653a2a0681ed64507219185cba36 SHA-256: b7d60a9e4482d8adbaf0d1411af48dcd9d4ff292806c2935376288c47fc0188e
166 Risk Score

Malware Insights

MITRE ATT&CK
T1059 Command and Scripting Interpreter T1566.001 Spearphishing Attachment

The PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm and contains a lure to execute commands via the clipboard. The embedded URLs suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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://lozipotod.ru/123?utm_term=sof+sole+anti-+friction+performance+socks PDF link annotation
    • http://prizinsta.site/91182023291oe2gn.pdfIn PDF document text
    • http://trenketo.buzz/vudazugevubapinuvusizunrsjl.pdfIn PDF document text
    • http://anbieterbewertung-autoscoutch.com/salatul_tasbeeh_ki_namaz_padhne_ka_tarika_batayeylitk.pdfIn PDF document text
    • http://tcerkovniekupola.space/3d_surround_music_player_full_version_free_downloadl8uew.pdfIn PDF document text
    • http://dkshlyap.ru/arb_association_risk_assessment_templatedjm7v.pdfIn PDF document text
    • http://pubgucbayim.com/lutawowutazevupizareacm.pdfIn PDF document text
    • https://japipimimobuxi.weebly.com/uploads/1/3/1/0/131071183/nijojoreza_taramojujuk.pdfIn PDF document text
    • https://livuwijonirib.weebly.com/uploads/1/3/4/7/134732661/6705194.pdfIn PDF document text
    • https://bixugukov.weebly.com/uploads/1/3/2/6/132680808/dukajelomijevigiji.pdfIn PDF document text
    • http://biomanua.website/485790461832x8cs.pdfIn PDF document text
    • http://cherrypimp.online/ideal_problem_solving_model_bransford_and_steini2q4g.pdfIn PDF document text
    • http://meinekarten.best/bamboo_cot_sheets_australiapzzo6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/suximawo/english_grammar_worksheets_for_grade_4_tenses.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/bade_bhai_sahab_answers_class_10.pdfIn PDF document text
    • https://e39bfc17-a898-4016-ac91-fc9303c112df.filesusr.com/ugd/b5068a_799cf4e533ff4092be9fa3b8917b5546.pdf?index=trueIn PDF document text
    • http://kivunakoxowufaf.epizy.com/zekesalewadir.pdfIn PDF document text
    • https://b4e79a3f-0083-4b26-8056-4fe87fb46dfd.filesusr.com/ugd/332c1b_2f9f3d3c5ba24a89a43ba4d185ed7d87.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/suximawo/87752351692.pdfIn PDF document text
    • https://559ef5b4-38f4-491c-95f5-a6f57f0534fb.filesusr.com/ugd/1b862a_24ff1f30f26c4ff382477059265714bd.pdf?index=trueIn PDF document text
    • http://nidemavaguwagev.rf.gd/mamiwowatodineriworifafim.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_off00011e92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E92 5360 bytes
SHA-256: 8a0b72a9140a2215c8b2600fd60055020bbad31645beae5776963cb47f4fd159
font_01_sfnt_off000130c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130C8 10148 bytes
SHA-256: cedb592860f256f3c47a7f4bb6df7dd071088db8d21aa0e6aabfe7c5aac1c929

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