Malicious PDF — malware analysis report

Static analysis result for SHA-256 bca6a9a41b7c5429…

MALICIOUS

PDF

73.2 KB Created: 2021-03-14 20:22:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 08b4ae8b5d3ad5dc42858489647ee2c3 SHA-1: 203afbd87f0dc59ec32e21b307e75de213b20df4 SHA-256: bca6a9a41b7c54293e457fbfc2ffb8045e29aa66a67f71815c03cebd9a3cb7c5
126 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains multiple external URIs, including one pointing to 'lozipotod.ru', which is likely part of a phishing or malware distribution campaign. The PDF structure and embedded links suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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=how+many+shots+in+polaroid+600+film
    • https://cdn-cms.f-static.net/uploads/4369173/normal_60219dbd1c954.pdf
    • https://cdn-cms.f-static.net/uploads/4413467/normal_6027e00a67e71.pdf
    • https://cdn-cms.f-static.net/uploads/4451365/normal_60309b34e18cc.pdf
    • https://cdn.sqhk.co/pomorezolo/gihjcM6/doors_awakening_level_10.pdf
    • https://cdn-cms.f-static.net/uploads/4491159/normal_5fd9fb5abc029.pdf
    • http://gubixazolela.sportsontheweb.net/46103476553.pdf
    • https://static.s123-cdn-static.com/uploads/4470835/normal_5fc92d0ae6124.pdf
    • https://static.s123-cdn-static.com/uploads/4403540/normal_5fe26f586eec0.pdf
    • https://static.s123-cdn-static.com/uploads/4497369/normal_5fe0e4d6c9ffa.pdf
    • https://cdn-cms.f-static.net/uploads/4407733/normal_602b4530bce60.pdf
    • https://cdn.sqhk.co/wuzosiboweja/UjfLihs/nifutagepovupa.pdf
    • https://cdn-cms.f-static.net/uploads/4458827/normal_6012fc0ac375c.pdf
    • http://mapotilij.mygamesonline.org/what_is_ls_full_name.pdf
    • https://static.s123-cdn-static.com/uploads/4410989/normal_5fec3d27a498a.pdf
    • http://ponaxamewimenul.sportsontheweb.net/zipimomumadepelunusejus.pdf
    • https://cdn.sqhk.co/jesisuvov/hdG3dia/29243974960.pdf
    • https://static.s123-cdn-static.com/uploads/4487906/normal_5fe0c8d663631.pdf
    • https://static.s123-cdn-static.com/uploads/4474475/normal_6009ab8e0cd8f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/gavobawum/canada_post_change_of_address_notification_forms.pdf
    • https://s3.amazonaws.com/tetenifeme/gusok.pdf
    • http://ziwemasux.myartsonline.com/gibaxuwujofoxebofakoveb.pdf
    • https://s3.amazonaws.com/mogipegi/kovukikokarofisoruv.pdf
    • http://wejufutaz.onlinewebshop.net/caderno_de_caligrafia_artistica.pdf
    • https://s3.amazonaws.com/kitakilesa/simone_weil_waiting_for_god.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d116.bin
cc47e09ff903b345fe79e9326c03b22796a908f9073acb4721b2cf14d6fae98c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD116 5404 bytes
font_01_sfnt_off0000e348.bin
480554cfcc8100af65100b45e140ed29b55f690f2234641dfccf666bb61e876c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE348 10488 bytes
font_02_sfnt_off0001071c.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1071C 4324 bytes

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