Malicious PDF — malware analysis report

Static analysis result for SHA-256 db0fb4dd867051f0…

MALICIOUS

PDF

78.2 KB Created: 2021-03-12 03:52:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 14b7df074822ef527b308c4627bfd8f0 SHA-1: abf207d0b7e8ea8bc8bc00d8d52ba00cd161b711 SHA-256: db0fb4dd867051f0f94fa1d6fb21ec617708929f2b01d2d1f4794ee04893dd83
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, with one prominent URL pointing to a domain associated with phishing and malware distribution. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a large number of links spread across multiple disposable hosts, suggesting an attempt to obscure malicious activity. ClamAV detection further confirms the malicious nature of the file.

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://maypoin.ru/wix?keyword=monopoly+millionaire+apk+ios PDF link annotation
    • https://cdn.sqhk.co/gorubabor/pqhi9yu/dark_quest_2_ps4_review.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481053/normal_601a602fe0f66.pdfIn PDF document text
    • http://volosaty100.xyz/bolotisixojameforol8xps.pdfIn PDF document text
    • https://cdn.sqhk.co/kekotenonaxu/am5oghe/rumble_news_source.pdfIn PDF document text
    • http://lodomujimujug.mywebcommunity.org/where_is_the_peroneal_artery_located.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403804/normal_603211214531c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405413/normal_5fd60c0043b00.pdfIn PDF document text
    • https://cdn.sqhk.co/xiselaza/jbhdTkA/the_legacy_3_walkthrough.pdfIn PDF document text
    • https://foderojev.weebly.com/uploads/1/3/4/0/134041652/kuvuzu_lasote.pdfIn PDF document text
    • http://logoped-samara.ru/computer_architecture_a_quantitative_approachecm8z.pdfIn PDF document text
    • https://cdn.sqhk.co/vasinabew/giigFWa/teaching_assistant_certification_courses.pdfIn PDF document text
    • http://abistrans.ru/how_to_connect_2_dj_mixers_togethercae1v.pdfIn PDF document text
    • http://sijiwepi.mypressonline.com/34323430535.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477408/normal_5fe3c8bf7e2b1.pdfIn PDF document text
    • https://dipediras.weebly.com/uploads/1/3/0/7/130739778/6208479.pdfIn PDF document text
    • https://zanewodibamejat.weebly.com/uploads/1/3/0/9/130969445/gamilagu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0dd0cd87-80d3-4eb5-b9c6-73c43c3a6fca.filesusr.com/ugd/f0b6b3_2598451bf55941898003c591c7bfd3f3.pdf?index=trueIn PDF document text
    • https://f06ae689-34e6-4fd9-b749-a5985747e370.filesusr.com/ugd/4117a9_50fa4bfa51384e10adb74b3e5b5913f3.pdf?index=trueIn PDF document text
    • http://rorokepu.atwebpages.com/geometric_progression_chapter.pdfIn PDF document text
    • https://7ae52be2-ba3c-41fb-8935-29281088223e.filesusr.com/ugd/affaa6_648dea7e9d4e4b4cb7767ec1719ced77.pdf?index=trueIn PDF document text
    • https://438c9214-13ba-44a2-8469-a4c97ff43377.filesusr.com/ugd/5d46a0_8b40bb37f1814a39971d2428f1567ede.pdf?index=trueIn PDF document text
    • http://nijarigu.onlinewebshop.net/salicylic_acid_msds.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_off0000f546.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF546 5136 bytes
SHA-256: f47a6d21aa0f615285e51a8266c3699182f7058df47f55a60f5411193bfb236f
font_01_sfnt_off000106bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106BB 10824 bytes
SHA-256: f88e9c8973f07c9877703a259ce52775a03f4d226104859143e20c814e376fb5

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