Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c0eac56718fdbc3…

MALICIOUS

PDF

75.9 KB Created: 2021-03-11 01:12:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 09cd91f88d27fab311ad1bc125b00e06 SHA-1: 62ae7185c0f554b7bae1c8a8be5c078d9184000b SHA-256: 2c0eac56718fdbc364ff89114c24c9707ee4cee96758c68c5f3c2dc028cd1c53
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable hosting or link farms, suggesting a phishing or content-luring attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to trick users into clicking links that lead to further malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://xajibur.ru/award?keyword=biology+dictionary+download+pdf PDF link annotation
    • https://womomoko.weebly.com/uploads/1/3/4/8/134848640/b33ab3e8ef5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485321/normal_5ffa32c9428c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443608/normal_6046ff38b111b.pdfIn PDF document text
    • https://cdn.sqhk.co/dapubebireba/chgO0ia/spin_orbit_coupling_constant_equation.pdfIn PDF document text
    • https://cdn.sqhk.co/wujakegu/eywYSjg/dude_theft_wars_open_world_sandbox_simulator_beta.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452161/normal_5fe5c4eaf41a0.pdfIn PDF document text
    • http://bokevefinobi.iblogger.org/finakezuwedofi.pdfIn PDF document text
    • https://cdn.sqhk.co/sosexazefip/fpG8wdq/john_nes_apk_full_2019.pdfIn PDF document text
    • http://kajejib.medianewsonline.com/5241237828.pdfIn PDF document text
    • https://bemisawu.weebly.com/uploads/1/3/4/7/134716701/9c4c571.pdfIn PDF document text
    • http://letnesil.xyz/mavodojawalezeke1a0c4.pdfIn PDF document text
    • http://vquest.website/linux_administration_bookcstn3.pdfIn PDF document text
    • https://nokatumevizo.weebly.com/uploads/1/3/2/7/132740479/suvumo_vozetega.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391009/normal_5fe12cb4b5204.pdfIn PDF document text
    • http://abanca-electronica.com/nevofagam9wal.pdfIn PDF document text
    • http://lamatokatov.22web.org/chhota_bheem_movies_vidtops.pdfIn PDF document text
    • http://neriwor.medianewsonline.com/what_is_particular_specifications.pdfIn PDF document text
    • https://zapubotugor.weebly.com/uploads/1/3/4/6/134635013/139a8b9.pdfIn PDF document text
    • http://shoop-fm.ru/android_app_tutorial_visual_studio_2017opzx8.pdfIn PDF document text
    • http://reabook.online/solving_quadratic_equations_by_factorising_answers22h51.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mexaxezixolo.rf.gd/35030041565.pdfIn PDF document text
    • http://nabulegewuwal.myartsonline.com/babotozavipabejesobipofab.pdfIn PDF document text
    • http://vepitejususas.atwebpages.com/37140968966.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_off0000ec01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC01 5388 bytes
SHA-256: 6ec7aab5e565438dbdb667a5cd1d9834d705071ae01ea453ac115236ce8cac80
font_01_sfnt_off0000fe80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE80 10492 bytes
SHA-256: 16636e42423558c17fd805a8e02333c41be86ed81f8156103ffeb54771800b2a

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