Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a2f96f4800fa97c…

MALICIOUS

PDF

77.3 KB Created: 2021-05-10 12:54:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 8a6e2711652b4a46ab9da43a4ac82df4 SHA-1: 75d70f15da57ed03e1f8639cf6d1aae4c0307c2d SHA-256: 2a2f96f4800fa97c86a6e70e94276d433a5d750945182c7f9d6c73f6df63cbe1
126 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains numerous embedded URLs, with one pointing to 'lozipotod.ru', a domain flagged for suspicious activity. The PDF structure and embedded links suggest an attempt to redirect users to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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://lozipotod.ru/strik?utm_term=ariens+st1032+reviews PDF link annotation
    • https://cdn.sqhk.co/rolileduvof/nuLBheM/tik_funny_short_funny_videos_clips.pdfIn PDF document text
    • https://cdn.sqhk.co/govonesed/jghgjbo/78372930259.pdfIn PDF document text
    • https://pazudafodimaje.weebly.com/uploads/1/3/0/7/130776249/6a17e.pdfIn PDF document text
    • https://cdn.sqhk.co/jutafegobexe/lgibkgg/84319655993.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392463/normal_604aebfbddb5a.pdfIn PDF document text
    • https://cdn.sqhk.co/vuxeneson/hbidIig/online_girl_booking_one_day_in_hyderabad.pdfIn PDF document text
    • https://pesiwuveso.weebly.com/uploads/1/3/5/3/135392822/5027128.pdfIn PDF document text
    • http://xogubafirugufa.iblogger.org/silositejenitivakilukev.pdfIn PDF document text
    • https://cdn.sqhk.co/lubometusoz/hbdgdQN/bubble_story_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/vefusujix/dLfghhb/puwiwuwibarosuzusamesil.pdfIn PDF document text
    • http://nowofuguvinidaw.iblogger.org/48477530060.pdfIn PDF document text
    • https://cdn.sqhk.co/toxodimina/iaPITwM/41791147266.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379035/normal_603729e27abf2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410002/normal_60052d4cb3ce8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373517/normal_606a3d45eae3c.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/ec4e0879-79a4-4ede-b14f-0e51edd3585f/fathers_and_sons_hemingway_quotes.pdfIn PDF document text
    • http://gibilumopujilot.epizy.com/wuzebipewekojutuzenajab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3dcc5f66-d4c0-4dd3-b59a-de00e6479c2c/hard_reset_kyocera_e6560_clan.pdfIn PDF document text
    • http://lamekukibudinos.epizy.com/is_stargirl_real_in_the_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b49590b5-7070-40f4-b7c0-1e7b81a19e85/muvesijizidagexanuv.pdfIn PDF document text
    • http://kepujelibip.epizy.com/teamviewer_linux_command_line.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/286da0db-f3dc-4ecb-8ed8-c0b2ea86b3bd/maytag_centennial_dryer_thermal_fuse_near_me.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_off0000f119.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF119 5068 bytes
SHA-256: f6bf6f3eba1dd112cff85abdedc90c6bee51ead84badc0b1aaf779d4d3227064
font_01_sfnt_off00010284.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10284 11076 bytes
SHA-256: a2e624e2d5c520995e4b81bbcb7ea3d4d732f620ee13caa3e2abd3ff375f94aa

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