Malicious PDF — malware analysis report

Static analysis result for SHA-256 015f76a27892d26d…

MALICIOUS

PDF

85.6 KB Created: 2021-03-04 01:16:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 186f5860e6f7f4de8aa73825db8f57db SHA-1: b7618ca63df606fce044c85dfb3bc59e16ee485a SHA-256: 015f76a27892d26d6d676e29ee6917772b0f548c149da25796b26dabd4d75ab7
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to disposable domains, indicating a link farm or SEO poisoning attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded URLs are likely used to redirect users to phishing or malware distribution sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • 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://xezojetit.ru/strik?utm_term=what+did+dr+myles+munroe+die+of PDF link annotation
    • http://vclean-sale.shop/garoxuvixesapefemurage3uh2l.pdfIn PDF document text
    • http://axecheat8.xyz/69712574662y081y.pdfIn PDF document text
    • https://cdn.sqhk.co/bepeguvovori/jeIjaSU/happy_images_for_facebook.pdfIn PDF document text
    • https://cdn.sqhk.co/zasemewiti/jjDiyk5/chessington_world_of_adventures_christmas_parties.pdfIn PDF document text
    • http://medway24.com/nuzakogimedw3vdu.pdfIn PDF document text
    • http://deemonatrafik.xyz/romantic_short_stories_in_english_literaturewp6lz.pdfIn PDF document text
    • http://creditscorehelp.info/is_netgear_ac1750_compatible_with_attevnwg.pdfIn PDF document text
    • http://hurricane1.space/vopemakifutu7s5.pdfIn PDF document text
    • https://cdn.sqhk.co/wularumijif/Skjfuhe/lofidexun.pdfIn PDF document text
    • http://smirno.life/72759564852de1vg.pdfIn PDF document text
    • https://cdn.sqhk.co/kimamena/NhhLjbP/tigafexutakokaximo.pdfIn PDF document text
    • http://ompala.store/49er_drive_in_theater_sacramento0ivte.pdfIn PDF document text
    • http://xujosigij.iblogger.org/escherichia_coli_trke.pdfIn PDF document text
    • http://islandlandscapesbb.com/cosmis_racing_xt-_006r_18x11_8obz48.pdfIn PDF document text
    • https://xagotixuben.weebly.com/uploads/1/3/4/6/134685277/5ce7e5829.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00011257.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11257 5260 bytes
SHA-256: 86ff79ae3a698d1fea8a033b4655284570a361abf75d572d37bdf6621e39b777
font_01_sfnt_off00012421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12421 11000 bytes
SHA-256: 180adf9ea5268faf95aca6e878acc679fba99091062fc171d1b8ea7e91f98849

Open this report in the interactive analyzer, or submit your own file for analysis.