Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9af663c90b84c92…

MALICIOUS

PDF

68.7 KB Created: 2021-03-31 18:03:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: a6e6364fda6e13f8ca252300fed67e8d SHA-1: 25735f1272fdd3a1862386a045e87cebf47c1daa SHA-256: a9af663c90b84c92ac6ff90ddc8aae479ed27bb4be510175a7074462e2f93a99
124 Risk Score

Malware Insights

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

The PDF contains numerous external links, many hosted on disposable domains, and is flagged by ML classifiers and ClamAV as malicious. The document body, though heavily obfuscated, appears to be a lure related to 'golf cart charger' information, directing users to suspicious URLs. The presence of embedded URLs and the link farm heuristic suggest an attempt to redirect users to malicious sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8464

Heuristics 4

  • 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
  • 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/strik?utm_term=how+to+check+my+golf+cart+charger PDF link annotation
    • https://cdn.sqhk.co/vatukaso/jcphdhh/57547316483.pdfIn PDF document text
    • http://dapovevi.mywebcommunity.org/ropelubetiwevejubar.pdfIn PDF document text
    • http://tk-time.site/ghost_hunt_anime_online_streamingjy3gc.pdfIn PDF document text
    • http://instapriz365.site/358447482869oh8u.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383449/normal_5fcf2223e83ca.pdfIn PDF document text
    • http://palikexifumalam.mywebcommunity.org/breville_juice_fountain_cold_juicer.pdfIn PDF document text
    • http://toxipoxekej.medianewsonline.com/tojoxixokasigazulakufip.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367947/normal_603a2163c6825.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422137/normal_5feafd8a96296.pdfIn PDF document text
    • https://cdn.sqhk.co/jutigurotow/gKaieG3/tales_rush_latest_mod_apk.pdfIn PDF document text
    • http://cheatyou.site/alcohol_distillation_process_videom8qai.pdfIn PDF document text
    • http://clebohets.xyz/38689190224qvdpr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493916/normal_6054010390212.pdfIn PDF document text
    • http://figejewumoposes.getenjoyment.net/introduction_to_analytical_chemistry_lecture_notes.pdfIn PDF document text
    • http://tijudozi.scienceontheweb.net/what_is_the_standard_color_sequence_of_a_straight-through_cable.pdfIn PDF document text
    • http://bigops.fun/shopsmith_bandsaw_blade_lengthjcu5b.pdfIn PDF document text
    • https://cdn.sqhk.co/bodovukig/Fhfjchb/funny_hunting_wife_memes.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gozuketitara.onlinewebshop.net/passport_renewal_form_bd.pdfIn PDF document text
    • http://livirava.atwebpages.com/78814951149.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4DA 5336 bytes
SHA-256: 589296e218effa3f6c8954136b530fcb29d5a26caa379efc6e63f99782069cc8