Malicious PDF — malware analysis report

Static analysis result for SHA-256 b96b4ec67da728e4…

MALICIOUS

PDF

70.9 KB Created: 2021-03-06 03:09:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 1e50ba15a0fe9dac8f391d65592929d7 SHA-1: 7e88e70c0b21f36a054ac34c581411c478e8ca14 SHA-256: b96b4ec67da728e43bccd3dd5b2c22b70a2038be886705c35c28b4872ed82640
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

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 0.7004

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • 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://leonvi.ru/strik?utm_term=les+miserables+cast+2019+tour PDF link annotation
    • http://dotixomovi.sportsontheweb.net/how_to_fix_printer_error_canon.pdfIn PDF document text
    • https://cdn.sqhk.co/kagelemovo/hchbicN/3880384896.pdfIn PDF document text
    • https://cdn.sqhk.co/giganopof/hiijgw2/49528645235.pdfIn PDF document text
    • https://cdn.sqhk.co/tumosirewuw/R3shaEC/racing_mania_game.pdfIn PDF document text
    • https://cdn.sqhk.co/jadosoxiko/gijccig/vujabuxinarenuzorawa.pdfIn PDF document text
    • https://cdn.sqhk.co/lixipadiwel/jdYidZM/pomusudipunamuz.pdfIn PDF document text
    • https://pagafamowadaf.weebly.com/uploads/1/3/4/8/134878907/dofiju-lifisejud.pdfIn PDF document text
    • https://cdn.sqhk.co/numavagoko/Hvgc5ji/bible_word_cross_game_download.pdfIn PDF document text
    • https://rasafidi.weebly.com/uploads/1/3/0/7/130776861/kezat-petirir-muwixugizelugo.pdfIn PDF document text
    • http://ruwemipuwev.mypressonline.com/pibomeder.pdfIn PDF document text
    • https://lutibaviw.weebly.com/uploads/1/3/4/6/134669369/2a697de1.pdfIn PDF document text
    • https://fiwirozubaxezu.weebly.com/uploads/1/3/4/6/134659856/502d7b5.pdfIn PDF document text
    • https://vavaxomutiposev.weebly.com/uploads/1/3/0/7/130738712/guveveboki.pdfIn PDF document text
    • https://cdn.sqhk.co/mevazasid/hcihrhb/86478883038.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/e5b83871-558e-4f15-b484-ab75fdd24b44/12449949512.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6df0a96-ab2a-454b-85db-17b5da74ecbc/42309340802.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63d4c7cb-fa51-4061-bee8-d26850c1fcbe/which_waterpik_tip_should_i_use.pdfIn PDF document text
    • https://s3.amazonaws.com/kegubinefuda/pesaxubisezilaxubaxufak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad03b630-5cd6-4077-83f6-343bd5ba2ded/vray_for_sketchup_2020_system_requirements.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/696d9001-7b88-489b-a4ef-e8bac6a9c9e9/wobasiberovowuvemofilak.pdfIn PDF document text
    • https://s3.amazonaws.com/sikuva/after_effects_full_version_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wonumafubij/motorola_moto_g6_user_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/nupadirezumewo.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/30681144523.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eca1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECA1 5508 bytes
SHA-256: 617846bf9e3d309ab7bd9c215fd346879e7d83f49ea888059cf8edb990961031

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