Malicious PDF — malware analysis report

Static analysis result for SHA-256 953a31b978c3064e…

MALICIOUS

PDF

105.9 KB Created: 2021-02-25 18:47:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 36e4c8c56ab30ab902118d7f49b69e8b SHA-1: 887c5a28d8c1ef88095838cb33f93b380c9d08b0 SHA-256: 953a31b978c3064ecd4c95e9baf95c3136fffd4d92b71b84d930b6d14b50faa3
96 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 trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, contains text related to 'Toro lx425 deck parts', suggesting a lure to encourage clicks on the embedded malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/strik?utm_term=toro+lx425+deck+parts PDF link annotation
    • https://cdn.sqhk.co/pulafefer/giwEig2/kurote.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458614/normal_5fca778455a8d.pdfIn PDF document text
    • http://moxolesapudeli.22web.org/32676453339.pdfIn PDF document text
    • http://fasufigige.iblogger.org/17573905299.pdfIn PDF document text
    • http://jerazuxu.iblogger.org/xarozumozixosuvubida.pdfIn PDF document text
    • http://rebejuguvodog.22web.org/56008543024.pdfIn PDF document text
    • https://cdn.sqhk.co/vatomepipiw/3gdjjja/walk_band_like_app_for_pc.pdfIn PDF document text
    • http://vatemuredaxusob.22web.org/guidelines_aneurysmal_subarachnoid_hemorrhage.pdfIn PDF document text
    • https://cdn.sqhk.co/molipigi/AFRjcHV/hunter_hero_of_assassin_games_apk.pdfIn PDF document text
    • http://soxabezavusuxud.22web.org/dogoretilusefomanose.pdfIn PDF document text
    • http://kefowawud.22web.org/online_appointment_form_for_cmc_vellore.pdfIn PDF document text
    • https://cdn.sqhk.co/jeporikate/bigieic/kovebojigerawiwunusoma.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/zibenoroduzuw/aplikasi_camera_scanner_to.pdfIn PDF document text
    • https://s3.amazonaws.com/goviwigax/theme_powerpoint_free_business.pdfIn PDF document text
    • https://s3.amazonaws.com/rurovikejigibu/exciter_vst_plugin.pdfIn PDF document text
    • http://powuruzi.epizy.com/vabidaxaxowozonaxokitev.pdfIn PDF document text
    • http://jeputujakajaj.epizy.com/abstract_algebra_cyclic_groups.pdfIn PDF document text
    • http://fonaxipovun.epizy.com/32119508890.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/insurgency_sandstorm_coop_guide.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_off00016324.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16324 5492 bytes
SHA-256: 7742c8019328ba7c1820b4ec9e8ae281dd2f1868123cfa1f21c1ba8cc222d3e1
font_01_sfnt_off000175f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x175F4 10736 bytes
SHA-256: a130c65f9c820ed1af314d5fe58a011da903df475794592bc4d1542b9c98bf3d

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