Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccebadb1cfbf9f85…

MALICIOUS

PDF

75.3 KB Created: 2021-03-21 23:10:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 937d5dc1a59b4248be452b858eefff4a SHA-1: 1198c96b80e570ed24ac3fbd72f9ff66b8a010de SHA-256: ccebadb1cfbf9f85a790bfae1a41106817c8b8db7d8377691f5cf700c5ebcfa6
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 0.9993

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://fokemale.ru/123?utm_term=nature+wallpaper+hd++for+laptop PDF link annotation
    • https://gijufonuvaxi.weebly.com/uploads/1/3/4/8/134874477/fewakexamubu.pdfIn PDF document text
    • http://rowowevu.mypressonline.com/can_spells_crit_dnd.pdfIn PDF document text
    • http://damvglaz2.xyz/viper_alarm_remote_battery_replacementycsjo.pdfIn PDF document text
    • http://birebap.scienceontheweb.net/minn_kota_i_pilot_link_app.pdfIn PDF document text
    • https://vozozexofevufut.weebly.com/uploads/1/3/1/8/131871902/3c0ae6d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388412/normal_60492d391c64c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385011/normal_5fcd1cba40c9b.pdfIn PDF document text
    • https://tewamuwomipatus.weebly.com/uploads/1/3/0/9/130969874/lomelomaderaji.pdfIn PDF document text
    • http://likedizar.medianewsonline.com/lunebux.pdfIn PDF document text
    • https://nubeboganiroj.weebly.com/uploads/1/3/1/3/131384383/dazukilidenukuzetew.pdfIn PDF document text
    • http://gafuvufafokujop.sportsontheweb.net/16942912135.pdfIn PDF document text
    • http://rowowevu.mypressonline.com/yaskawa_z1000_bacnet_manual.pdfIn PDF document text
    • http://janipuwibir.mywebcommunity.org/botuxifo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410954/normal_6019c9b9b7631.pdfIn PDF document text
    • http://help-copyrighteamservice.com/2006_ford_explorer_transmission_replacement_cost0hzt9.pdfIn PDF document text
    • http://bitiwiz.medianewsonline.com/93442015215.pdfIn PDF document text
    • https://mokapojigum.weebly.com/uploads/1/3/4/6/134690111/78168.pdfIn PDF document text
    • http://forajadafogaxuv.medianewsonline.com/is_code_for_brick_masonry_design.pdfIn PDF document text
    • http://vosojivaru.mypressonline.com/22105029835.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371505/normal_6044f42b040d3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kulebosux.myartsonline.com/la_biblia_en_espaol.pdfIn PDF document text
    • http://magajavopisili.epizy.com/wobapigilumetirabifofige.pdfIn PDF document text
    • http://moberasar.rf.gd/algebra_worksheets_grade_10.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_off0000ea7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA7A 5012 bytes
SHA-256: db87bf6cd8bc1dea66002df0231b15f7bcf4bb09d06478750de748458f22caf6
font_01_sfnt_off0000fb99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB99 10560 bytes
SHA-256: dced511314203df607180334fa803f9f27ce11c04b300101abbed0cf587368b5

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