Malicious PDF — malware analysis report

Static analysis result for SHA-256 38ffe204505ffd7c…

MALICIOUS

PDF

144.5 KB Created: 2021-01-31 02:01:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8b058b547e4c03fd2d58cba3386c0bf6 SHA-1: 46fcd2a6cc907dbb2e4bc34620e8eddf5146ea34 SHA-256: 38ffe204505ffd7c7a81f55ec74aa3b1a1317be5e9342ec8969b37963b095177
112 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an invoice-themed lure and an urgency-based lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://traffset.ru/wb?keyword=offroad%20racing%20games%20pc PDF link annotation
    • https://cdn.sqhk.co/mozoposowi/gihhagh/mindsprings_health_glenwood_springs.pdfIn PDF document text
    • https://cdn.sqhk.co/wobuwozavenu/fibgjVZ/golden_boot_2019_20_list.pdfIn PDF document text
    • https://cdn.sqhk.co/zarepowake/bRigFhd/digazidudawowusutudoxuna.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417406/normal_6008287f4eb9a.pdfIn PDF document text
    • https://cdn.sqhk.co/kixobaza/djhfial/spanish_word_of_the_day_sesame_street.pdfIn PDF document text
    • https://cdn.sqhk.co/sadetujadufi/ic0ZicF/lasokegugeta.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410004/normal_5fd9677929137.pdfIn PDF document text
    • https://cdn.sqhk.co/bipokagiti/hd4jb3E/34445381926.pdfIn PDF document text
    • https://cdn.sqhk.co/ketalidukepi/MjiD0hh/romantic_stickers_2020_wastickerapps_romantico.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419413/normal_5fe8b815aa872.pdfIn PDF document text
    • https://cdn.sqhk.co/giwumazusew/hdkFjgK/dreamlines_australia_gold_coast.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/dutuzanob/graduation_party_invitation_template_4_per_page.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/mijole.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/30381128159.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/debowudu.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/12146863735.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/christian_song_tagalog_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/xowubamebupogafejir.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_off0001fb27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FB27 5468 bytes
SHA-256: 5549670e8a03ddc73028347a1347f3d7e68e2734ba095043286212e71ee4390e
font_01_sfnt_off00020dab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20DAB 11472 bytes
SHA-256: 2be4e6087eac5ad46bd4ea2f07f207d175288dda95dc3f5cf6f07f39e0302315

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