Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa40d344448deb26…

MALICIOUS

PDF

73.0 KB Created: 2021-02-26 12:25:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b8b9c873b1c8f5a235152c2d72cf1aa2 SHA-1: a319cd64835114bf2c1e1dd07601883d5dfc7dce SHA-256: fa40d344448deb268baca88180afe0b52e3eabb3a417b35e658351001d35aa1a
96 Risk Score

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. 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 0.9997

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://druttle.ru/wix?keyword=learn+to+fly+3+guide PDF link annotation
    • https://cdn.sqhk.co/jezuleku/iGggvOR/nintendo_switch_online_family_12_month.pdfIn PDF document text
    • https://cdn.sqhk.co/tinolaseja/fUdPgek/42477970901.pdfIn PDF document text
    • http://jofifuneku.medianewsonline.com/nujasoriwavapetivopen.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476941/normal_5ff16b6c42cc0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417206/normal_5fd73c8a4eba7.pdfIn PDF document text
    • http://bosemefawixuwov.mypressonline.com/gejuvopujijijedifurug.pdfIn PDF document text
    • http://tepugorotewole.medianewsonline.com/34541733883.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367313/normal_5feb8bc37c0ee.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/xupimaral/hydraulic_accumulator_nptel.pdfIn PDF document text
    • http://nabenejajoko.myartsonline.com/99149016681.pdfIn PDF document text
    • http://zejibanunepi.myartsonline.com/how_to_cite_wall_street_journal_bluebook.pdfIn PDF document text
    • http://vebusatoro.atwebpages.com/pasuk.pdfIn PDF document text
    • https://s3.amazonaws.com/sefepugolupalax/datos_del_informante_en_ingles.pdfIn PDF document text
    • http://pujumek.myartsonline.com/bavopulavakan.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/barclays_mobile_pinsentry_app.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/78789212139.pdfIn PDF document text
    • https://s3.amazonaws.com/fadupazageraf/my_friend_dahmer_movie_parents_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_off0000e103.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE103 5104 bytes
SHA-256: 0e05f2d163e17828fc721c02c9e80cdcab484a21d820b641e43d30a2e9aa0c03
font_01_sfnt_off0000f286.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF286 10864 bytes
SHA-256: 5de7552539bc93f9cb6cd6a7810dee888a9c12eb4bde9c3a369da757a822f06d