Malicious PDF — malware analysis report

Static analysis result for SHA-256 180c24f5aee2d59b…

MALICIOUS

PDF

84.6 KB Created: 2021-03-10 10:12:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 42ff5c282fb260cea7b289255b237cfa SHA-1: 368f6d0eb9efa44a5a55b117492afd228a26685e SHA-256: 180c24f5aee2d59b4b17843df06a9d4296ae22eb39d3c0378b9bb5acab926303
194 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO spam operation. The document body, though heavily obfuscated, appears to contain metadata related to its generation, possibly to disguise its true purpose. The primary attack pattern involves directing users to malicious external URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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 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.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=aquarite+goldline+controls+manual PDF link annotation
    • https://famixarusefon.weebly.com/uploads/1/3/4/3/134396739/9603912.pdfIn PDF document text
    • https://zeraxoxuret.weebly.com/uploads/1/3/4/6/134642117/8e7cdd4.pdfIn PDF document text
    • https://dowamodugepaxa.weebly.com/uploads/1/3/0/7/130739159/tugufopoguzefegage.pdfIn PDF document text
    • http://wiwomadexuza.22web.org/71010028628.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405687/normal_5fffe3dd6af66.pdfIn PDF document text
    • http://labiluwewinedu.22web.org/fight_club_2.pdfIn PDF document text
    • https://cdn.sqhk.co/vizejagojib/cheBjhP/suwatoraganuxukodibenibev.pdfIn PDF document text
    • https://cdn.sqhk.co/zowonefaso/ieavmkS/13059306066.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457857/normal_6002ebd0b4f64.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383801/normal_601aa3c0b5c9f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485573/normal_602d8d14e7b28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369781/normal_5fe8cca98fa39.pdfIn PDF document text
    • http://babitilakibo.mywebcommunity.org/coleman_6250_generator_parts_diagram.pdfIn PDF document text
    • https://cdn.sqhk.co/fapolokid/bnlcWry/notosewumafobe.pdfIn PDF document text
    • https://vugiwaxe.weebly.com/uploads/1/3/4/7/134739196/famizira_zigosiresi_suwoze_lumudi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://puganuditefi.rf.gd/mandino_greatest_salesman_in_the_world.pdfIn PDF document text
    • https://661c91a2-68a2-4ae3-aaac-ef96b6cc7894.filesusr.com/ugd/b926a8_bd44ef0b0a7f4721991c9992fd367382.pdf?index=trueIn PDF document text
    • http://zosujudete.epizy.com/relonifuvifezutonaji.pdfIn PDF document text
    • https://9334512a-4df1-45dc-8804-f0fa1d9e2a3d.filesusr.com/ugd/9466eb_aea732c80205492985c8c761e0b0dac7.pdf?index=trueIn PDF document text
    • http://gupizamowakop.myartsonline.com/how_do_i_write_4_hundredths_as_a_decimal.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_off00010c9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C9B 5372 bytes
SHA-256: 2083d09a2b6cd84bb7a01123b57d76bf9df43aa18bd5b44112bd4f7ff19fc251
font_01_sfnt_off00011ec3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EC3 11364 bytes
SHA-256: 625b6a19ec27aafd2a9d04807b89cf2304b3a77aa6dfd48817bd920491afd694