Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1dbfd6a4b839df9…

MALICIOUS

PDF

85.6 KB Created: 2021-02-26 11:27:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 312dd8f437e1f0f9471dea990f241099 SHA-1: 0d9e4f58bc779b4b42b2a8d432a7ae54227afbb2 SHA-256: e1dbfd6a4b839df9c3a3d256f573c03c4c0cf83146be58a4c27fa24533cbcfac
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL `https://lozipotod.ru/award?keyword=k9+mail+app+apk` suggests a lure to download a malicious payload or engage in phishing. While no scripts were explicitly extracted, the PDF structure and embedded URLs are commonly used for initial access via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lozipotod.ru/award?keyword=k9+mail+app+apk PDF link annotation
    • http://lojapidabud.mypressonline.com/what_anime_is_one_punch_man_from.pdfIn PDF document text
    • http://gosoxegekiri.mywebcommunity.org/3._what_is_the_central_theme_of_the_poem_the_road_not_taken.pdfIn PDF document text
    • http://kasaxeko.mypressonline.com/xejaresipukiradezevub.pdfIn PDF document text
    • http://kolomata.ru/table_of_contents_template_word_freeka32j.pdfIn PDF document text
    • http://on24-system.club/motudagipa7o39s.pdfIn PDF document text
    • http://nowukusox.mypressonline.com/kubota_bx25_attachments.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372373/normal_60357738dee0e.pdfIn PDF document text
    • http://fekevopimibun.sportsontheweb.net/educational_employees_credit_union_wire_routing_number.pdfIn PDF document text
    • http://wapividazofar.scienceontheweb.net/80075261340.pdfIn PDF document text
    • http://zogometemo.sportsontheweb.net/99838447457.pdfIn PDF document text
    • http://gojawufeki.getenjoyment.net/38748623310.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/zerepuzuze/thanksgiving_worksheets_high_school.pdfIn PDF document text
    • https://s3.amazonaws.com/dewazewokib/rogemoregikujanelimadi.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/sixosotenemoleza.pdfIn PDF document text
    • http://vunonam.atwebpages.com/who_is_candice_king_in_after_we_collided.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/bad_boy_cascada_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/fefurorobumi/pudapevagir.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF14 17136 bytes
SHA-256: d81eed67123a2529d731593ecb3865483aa7c215023ddb38eee908a1dd6dc0c5
font_01_sfnt_off00011645.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11645 4880 bytes
SHA-256: b15805a9a18ee3673a1859f1bb3edfa75c42bed0dfb5ed0a0034fa8a339e0bec
font_02_sfnt_off000126cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126CD 9908 bytes
SHA-256: a25e7d2c7deef59430fa9b4d94b5a1a051046c4f84819aeb9298463ea68f0e13

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