Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c34065affd47e44…

MALICIOUS

PDF

76.9 KB Created: 2021-04-24 16:13:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 78b48306e0ff8fa94cafe90af716a57a SHA-1: b8f69e1c5296826cb8e078bfdb577c74ed5422f5 SHA-256: 6c34065affd47e443565b2fb1190e80406f7567abe844885cd3eec7aabf763a3
186 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, many hosted on disposable domains, characteristic of a link farm or phishing campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to potentially malicious sites, possibly for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://fokemale.ru/strik?utm_term=how+to+sort+data+month+wise+in+pivot+table PDF link annotation
    • http://martakkord.ru/law_and_order_remains_of_the_day_full_cast3uxvu.pdfIn PDF document text
    • https://fitokuzigijot.weebly.com/uploads/1/3/4/6/134681543/8108554.pdfIn PDF document text
    • https://cdn.sqhk.co/pasudajuwesa/owjdjB3/free_country_music_ringtones_for_my_cell_phone.pdfIn PDF document text
    • http://satogolijosefas.iblogger.org/editing_documents_online_free.pdfIn PDF document text
    • https://pisekubil.weebly.com/uploads/1/3/4/3/134322001/figipagotixej.pdfIn PDF document text
    • https://rimejosokodux.weebly.com/uploads/1/3/4/6/134691074/rezasazoma-tijapud.pdfIn PDF document text
    • https://cdn.sqhk.co/sigidezok/N9Yhdje/tour_bus_hill_driver_game.pdfIn PDF document text
    • https://zikixitifo.weebly.com/uploads/1/3/4/8/134897390/8910496.pdfIn PDF document text
    • http://montana-media.com/92697358332h1yck.pdfIn PDF document text
    • https://woziwapimarezex.weebly.com/uploads/1/3/5/4/135400795/8b88a2970cee770.pdfIn PDF document text
    • https://cdn.sqhk.co/tibidimewako/9Yhhjag/texufogesunajibubasiwolat.pdfIn PDF document text
    • https://mujilaku.weebly.com/uploads/1/3/4/3/134389228/5620951.pdfIn PDF document text
    • https://mewifukemi.weebly.com/uploads/1/3/4/7/134764424/bcb92.pdfIn PDF document text
    • http://closemaze.com/66159750178ndwkx.pdfIn PDF document text
    • https://magirakikepemun.weebly.com/uploads/1/3/4/0/134000039/jaxesil_lubuwefukim_jurati_gejasibuxudosev.pdfIn PDF document text
    • https://lumamiwaba.weebly.com/uploads/1/3/4/7/134735329/c8e6d31af80d28c.pdfIn PDF document text
    • https://rujuramokukavet.weebly.com/uploads/1/3/0/7/130739146/4398593.pdfIn PDF document text
    • https://mofegagopabelem.weebly.com/uploads/1/3/1/4/131438130/9437095.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rafobubavotiba.epizy.com/80835564395.pdfIn PDF document text
    • http://sefibonep.rf.gd/anime_characters_birthdays_on_january_21.pdfIn PDF document text
    • http://gatapin.rf.gd/abematv_apk_not_working.pdfIn PDF document text
    • http://fazegixedibuw.rf.gd/fringe_movie_hd.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_off0000eeb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEB0 5452 bytes
SHA-256: c25c3e883be067d0758d7f7e7535dbe78a72893f35d8783c1c07d8c997376737
font_01_sfnt_off0001011a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1011A 10848 bytes
SHA-256: ac5d64bbbb9c64d9622a160df06e52d70308044fafefb7b78f9097cd0365b557

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