Malicious PDF — malware analysis report

Static analysis result for SHA-256 c49202d9f66d0e8a…

MALICIOUS

PDF

79.6 KB Created: 2021-03-23 06:12:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 009fb4031208492db7248a162815807f SHA-1: 749a9e4f1ae4a9d2c066517637f02888bf3f3c06 SHA-256: c49202d9f66d0e8a22a95d575b0f19d16ed05a73fdf1860ff6311a5eb49aa443
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/123?utm_term=game+animal+kaiser+pc PDF link annotation
    • http://mafonofolifeda.22web.org/fresnel_biprism_viva_questions_and_answers.pdfIn PDF document text
    • http://byseles.xyz/demagogekuvenojuxog0m1ek.pdfIn PDF document text
    • https://cdn.sqhk.co/nufesewepi/gcjd3Iu/ftdi_breakfast_recipes.pdfIn PDF document text
    • http://bridgecommerce.com/gevudakah2nd4.pdfIn PDF document text
    • https://cdn.sqhk.co/bivosozos/heihiiE/webcomics_free_coins.pdfIn PDF document text
    • http://myluckybet.xyz/puroguxiwazovhuk.pdfIn PDF document text
    • http://mixezitubut.mygamesonline.org/principles_and_applications_of_chromatography.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368732/normal_600189320ff65.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375909/normal_5fced76400556.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465702/normal_5fd7e9da4e758.pdfIn PDF document text
    • http://awpmode.com/moto_g6_play_review_2019wjccl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500425/normal_5fdc41f5203ba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393019/normal_5ff635a15e0a2.pdfIn PDF document text
    • http://zespodsvetkoy.site/how_s_it_going_yahoo_answersmdwyq.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf4bd79d-d4f7-4aad-91fc-b280c9709217/omron_plc_programming_manual.pdfIn PDF document text
    • http://motiwop.rf.gd/libro_de_fisica_1_medio_2020_mineduc.pdfIn PDF document text
    • http://pugazapuxijal.myartsonline.com/24862643536.pdfIn PDF document text
    • http://dogiwexor.myartsonline.com/variwazijenojurefiwovof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43e67eb9-67d4-47f4-b130-5ded9e93c9f7/is_mba_worth_doing_in_india.pdfIn PDF document text
    • http://befakugidutoj.rf.gd/27709611776.pdfIn PDF document text
    • http://kafuzir.epizy.com/2020_nba_mock_draft_bleacher_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a522645f-090a-43b0-bad7-5dd2ab62b32c/15951781631.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_off0000f959.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF959 5176 bytes
SHA-256: 1665119082398152ed369d204a35b48a0f3443d6fa8daa8bc893696ed0084702
font_01_sfnt_off00010ae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AE0 11100 bytes
SHA-256: 037dfd4c497fc28589afede4e836c3e36ea19b4d76c8ff8dae646b1a788bb003

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