Malicious PDF — malware analysis report

Static analysis result for SHA-256 47a924ef4957790c…

MALICIOUS

PDF

80.6 KB Created: 2021-03-09 01:28:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 7b44751d31c67727ded207686977ccab SHA-1: b5211a192258c5825b66a7a4be6e1e675e1b0d5a SHA-256: 47a924ef4957790cd80a560d8015e9e4556b51806288c92f62bb4457e4e4a345
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with one specifically pointing to a suspicious domain related to 'venezuela political crisis pdf', suggesting a phishing or social engineering lure. The PDF also functions as a link farm, directing users to various external resources, likely to obscure the malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gimoguvi.ru/award?keyword=venezuela+political+crisis+pdf PDF link annotation
    • http://biruweno.iblogger.org/butixarupe.pdfIn PDF document text
    • http://xavedevub.iblogger.org/canon_eos_6d_mark_2_manual.pdfIn PDF document text
    • http://rixiroremijiw.22web.org/6637715419.pdfIn PDF document text
    • http://kegujusotuk.iblogger.org/bedoro.pdfIn PDF document text
    • http://pasikufopubiwo.mypressonline.com/the_quran_download.pdfIn PDF document text
    • http://zuxemesemubozo.mywebcommunity.org/adverse_childhood_experiences_score.pdfIn PDF document text
    • http://vanimerukaguto.scienceontheweb.net/best_place_to_learn_final_cut_pro.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://413f70bc-0247-4a04-a3fc-eabb14e2b93f.filesusr.com/ugd/f18ee6_881ab7b2ee604ed9b9103e0e37d18013.pdf?index=trueIn PDF document text
    • http://zawebazukoni.rf.gd/soccer_drills_with_cones.pdfIn PDF document text
    • http://puxakuxuvon.epizy.com/13264319635.pdfIn PDF document text
    • https://6cda4dd4-8aac-43e7-8003-7c0eea9f7907.filesusr.com/ugd/34e26e_672617b797544c0fa4b9aded08647d99.pdf?index=trueIn PDF document text
    • https://7f793f8f-877f-420e-851b-8bae9ea62a4d.filesusr.com/ugd/78c764_e0c45deb4f1443c88afaeb93311b1739.pdf?index=trueIn PDF document text
    • http://levaduru.epizy.com/sumuxebubagexi.pdfIn PDF document text
    • https://83d12552-0bc1-4415-b221-1da25caacb9b.filesusr.com/ugd/1e11d0_610494d69d88474e9739bc4a06a07458.pdf?index=trueIn PDF document text
    • http://xakazasaravi.onlinewebshop.net/70612205290.pdfIn PDF document text
    • http://pasazaxara.rf.gd/h_s_c_marksheet_2019.pdfIn PDF document text
    • https://591e60e9-54e8-4b06-a9a7-f2e0522969d0.filesusr.com/ugd/1fd4b7_035e0681aad7425495d5b6b1f77be03f.pdf?index=trueIn PDF document text
    • http://sokagozu.rf.gd/boogie_woogie_piano_riffs_sheet_music.pdfIn PDF document text
    • http://popirarubinuluk.rf.gd/pejotonebiwemenemaro.pdfIn PDF document text
    • http://vadimote.rf.gd/96_jeep_cherokee_starting_issues.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_off0000ffd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFD9 5164 bytes
SHA-256: 2febd10c11a3e5092bb6785b235117d1fe163fa4820643ee446a97fef22b3107
font_01_sfnt_off00011184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11184 10412 bytes
SHA-256: 611f57e5276451a4dc8535aa7c6a23426b8116bef34893a2fcc138a7504a8e0d

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