Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e10fc08d73d6f5d…

MALICIOUS

PDF

80.2 KB Created: 2021-03-13 23:43:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54d9c2a8a3323dfd4be0e1c244415b7a SHA-1: 70fd7a864bcea2160da7f1037891ec4826b4047c SHA-256: 8e10fc08d73d6f5da99146cebcc7f85097c08ef4a2fb8ef21a1e018f596a7505
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF containing an embedded URL that leads to a suspicious domain, identified by ClamAV as a phishing/trojan. The document body, though partially garbled, suggests a lure related to search results. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect the user to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/123?utm_term=dizilerde+genel+terim+bulma+form%25C3%25BCl%25C3%25BC
    • http://dumubemajizukov.medianewsonline.com/47009829289.pdf
    • http://tilosag.mypressonline.com/las_brujas_no_se_quejan_descargar_gratis.pdf
    • http://gudutisiluzew.mypressonline.com/administracion_de_empresas_turisticas.pdf
    • http://giwudogor.scienceontheweb.net/metopevov.pdf
    • http://togaxifobuf.mypressonline.com/bank_exam_today_english_grammar.pdf
    • https://cdn.sqhk.co/sosexazefip/qiaP0xa/pokajutanujemetadasam.pdf
    • http://fobativ.mywebcommunity.org/vazisegasowero.pdf
    • http://vojemodipu.sportsontheweb.net/the_blind_assassin_essay_topics.pdf
    • https://sawobefuridavo.weebly.com/uploads/1/3/4/8/134895752/losot.pdf
    • https://mozakemu.weebly.com/uploads/1/3/0/7/130738716/3d9a300853aa.pdf
    • http://vijevejumozugim.sportsontheweb.net/how_to_fit_garage_door_bottom_seal.pdf
    • https://buketopol.weebly.com/uploads/1/3/4/0/134013372/d4d20e60b7d08.pdf
    • http://ruwemipuwev.mypressonline.com/86423374806.pdf
    • https://tonavamajarow.weebly.com/uploads/1/3/4/6/134694337/6946056.pdf
    • http://tegubija.mypressonline.com/49588796549.pdf
    • https://cdn.sqhk.co/zamikukodef/hghbvn7/lajixev.pdf
    • https://cdn.sqhk.co/xedufoga/hj5vCje/cross_bridges_form_between.pdf
    • https://cdn.sqhk.co/sabumijobude/c2ghRDN/real_steel_characters_then_and_now.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bajupigirosinaf.atwebpages.com/appalachian_trail_map_pennsylvania.pdf
    • http://sawesupunozigiv.atwebpages.com/q_see_presidio_default_password.pdf
    • http://bozisiruvaletun.rf.gd/zunozifoxasogegis.pdf
    • http://gegilifopom.myartsonline.com/belegusavenotu.pdf
    • http://xakitum.epizy.com/english_grammar_exercises_for_beginners.pdf
    • http://nabukewegurizev.rf.gd/dusakozakevagozezes.pdf
    • http://gofumakexoj.onlinewebshop.net/31359720759.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_off0000f753.bin
2a08e678a6c8563026fb8452658c87283666334dbe693baf84441601be16a6f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF753 5360 bytes
font_01_sfnt_off0001094c.bin
808d0a6e059fe184a62edf948b83da392c99ca2838a2834756b8d73e6a575032		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1094C 12344 bytes

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