Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0560cffa3cc4d7b…

MALICIOUS

PDF

77.5 KB Created: 2021-03-03 11:25:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 6f383bec48c481cb433cef5ab388bf40 SHA-1: e7c4722e8f7d59aca16720e2091d77c312b3792d SHA-256: f0560cffa3cc4d7b8448d3a66e4c4d76032ccfb3f4c7890ab0a0bbe9715778e7
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, many pointing to disposable domains and Weebly hosting, indicating a link farm designed to distribute malicious content. Heuristics like 'PDF_SEO_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggest this malicious intent. ClamAV detection as 'Pdf.Phishing.Trojan' further supports the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • 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
  • 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://maypoin.ru/123?utm_term=spotted+lanternfly+egg+laying+begins+in PDF link annotation
    • https://jugurapofan.weebly.com/uploads/1/3/4/3/134339640/7577887.pdfIn PDF document text
    • https://cdn.sqhk.co/zelosoza/eYAia1a/64519164341.pdfIn PDF document text
    • https://lurusinobafor.weebly.com/uploads/1/3/2/7/132710654/pinoxunexa.pdfIn PDF document text
    • https://cdn.sqhk.co/farafakilof/ajhoFih/23328282971.pdfIn PDF document text
    • https://cdn.sqhk.co/gokovolasula/ifajbha/motor_vehicle_ny_phone_number.pdfIn PDF document text
    • http://idealslimitaly-ufficiale.site/4785987851zjs4.pdfIn PDF document text
    • http://successinyourlif.website/85747470157jyql6.pdfIn PDF document text
    • https://cdn.sqhk.co/ketegobuto/YhhjBgj/reaver_titan_forgeworld.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501231/normal_5ffdfa2c5fccd.pdfIn PDF document text
    • https://lijuvimu.weebly.com/uploads/1/3/0/7/130775306/nesagiram.pdfIn PDF document text
    • https://cdn.sqhk.co/jigavozef/8JvkKkE/picapiedras_en_ingles_traduccion.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416316/normal_5fc9a220b8a66.pdfIn PDF document text
    • https://cdn.sqhk.co/zujubokave/jg0jfia/radio_flyer_scooter_red.pdfIn PDF document text
    • https://cdn.sqhk.co/lazimafuxuxi/gdngd1F/49244020302.pdfIn PDF document text
    • http://evromotors.net/how_to_track_sim_card_location_onlinez3bnu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459631/normal_5fcb3baeced0d.pdfIn PDF document text
    • https://cdn.sqhk.co/dijowasedop/THhcEB4/goat_simulator_trophies_goatville_ipad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369504/normal_6015ee30adbcd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476427/normal_5fc5bc1919f21.pdfIn PDF document text
    • http://fashion-deals.xyz/xafenatami0vb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383170/normal_5fcc00db430ec.pdfIn PDF document text
    • https://badobokitevobux.weebly.com/uploads/1/3/0/9/130969603/3373010.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000f262.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF262 5556 bytes
SHA-256: 8efc3c6be6bd6ecacd058bf4ec26aee2d43d2d9d6bca36a61f2bf550929f367f
font_01_sfnt_off00010556.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10556 10200 bytes
SHA-256: 4243cb5ea25bc3bf37988cf6cd68f15d4d3cb08d82e2c8161e07d1dcfb2d79fc

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