Malicious PDF — malware analysis report

Static analysis result for SHA-256 147220473181279b…

MALICIOUS

PDF

90.6 KB Created: 2021-03-05 18:15:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0510215c4ba8349c55c221bbdd244280 SHA-1: aee1597fef6fc106c4764e40a80bcb6edf93e8b3 SHA-256: 147220473181279b9919c62667cb29edadd5d897f75c0ad437c8806c41272a2d
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains a large number of external links, suggesting it is part of a link farm or designed to redirect users to malicious websites. The presence of embedded URLs and the overall structure point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://kuzutuzo.ru/wix?keyword=social+gospel+movement+significance
    • https://fafetomipisiso.weebly.com/uploads/1/3/4/6/134603542/juxakofobenipawopavu.pdf
    • https://cdn.sqhk.co/gofelaxes/V0hjhjs/hitman_s_bodyguard_2_full_movie_online.pdf
    • https://cdn.sqhk.co/wivenute/egdhx4d/swing_state_polls_biden_trump.pdf
    • https://cdn-cms.f-static.net/uploads/4462362/normal_603945aeab5da.pdf
    • https://cdn.sqhk.co/wujakegu/hexYBgj/46695063142.pdf
    • https://cdn-cms.f-static.net/uploads/4420927/normal_6018e865e9664.pdf
    • http://dlkmvkoenv.info/72019937763mkhve.pdf
    • https://cdn-cms.f-static.net/uploads/4394072/normal_6041550d3a337.pdf
    • http://vikarevu.22web.org/62416832348.pdf
    • https://cdn.sqhk.co/fuluzezufe/sieifii/epic_war_castle_alliance_hack_apk.pdf
    • https://cdn-cms.f-static.net/uploads/4502567/normal_6010461e91db3.pdf
    • https://static.s123-cdn-static.com/uploads/4481052/normal_5fe56a6ed933a.pdf
    • https://taxajoberaruvu.weebly.com/uploads/1/3/4/3/134320235/5438f142891.pdf
    • https://xovajuvomupug.weebly.com/uploads/1/3/0/7/130776021/5521008.pdf
    • http://supsun-aero.com/1144815927wnbvr.pdf
    • https://tuzopukerokep.weebly.com/uploads/1/3/5/3/135347688/8870974.pdf
    • https://kotutoxegaru.weebly.com/uploads/1/3/2/6/132695780/lasufuzefemil-magazixo-ponurowekep.pdf
    • http://techanomic.com/journey_to_the_center_of_the_earth_2008_full_movie_download_in_hindi_480pzqem1.pdf
    • http://golden-bridge.pro/how_to_read_chinese_poetry_workbooky7pjv.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bikikifuxax.epizy.com/churake_dil_mera_instrumental_free.pdf
    • https://a581e706-3bf6-41fb-8978-ad4d4077590d.filesusr.com/ugd/afbe6b_6e0084815e0f472bbcb654d69064780f.pdf?index=true
    • https://814cba0f-f649-4223-bfe6-7884e6e02b9d.filesusr.com/ugd/c1108c_30804cada38f4d6a8d95d0370cb6895a.pdf?index=true
    • https://b998fa74-583e-446a-a2a7-67f41460fdb2.filesusr.com/ugd/e081f8_b95023a9084f4d6e901189d4c7abadfc.pdf?index=true
    • http://xobekorafoza.epizy.com/are_old_nissan_frontiers_reliable.pdf
    • https://c8070bf9-ed42-4c5d-8eb8-ca35ee70f136.filesusr.com/ugd/d38238_f11461389304435984fda962e1fad368.pdf?index=true
    • https://39c10a3a-92c6-412a-a1bb-b8a1fc48fbc4.filesusr.com/ugd/259099_8c9b88dab10d410fa490f57954593ed7.pdf?index=true
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000124c1.bin
cd22a309fef5f35bee038364db58a08bf18208cfef9ff6660e5a4187a071a790		 pdf-font-stream PDF embedded font (sfnt) at offset 0x124C1 5400 bytes
font_01_sfnt_off00013727.bin
b15762337a40ed1b55327d5a700d027a5e1636e5ec0ecdb68abaa3c9b5d0b09a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13727 11152 bytes

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