Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d093b77671bc847…

MALICIOUS

PDF

72.6 KB Created: 2021-03-22 20:57:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9609eb2d8ae22043d9219a36510c0b81 SHA-1: 23dfedc76fadbf20b776fa1a2eb2ef9a787aa7bb SHA-256: 4d093b77671bc847d8d7caa8bc4586869b51ce242d7aa84013d8aadf78eadf3b
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL pointing to a suspicious domain, identified as malicious by ClamAV and ML classifiers. The document body, though heavily obfuscated, suggests a lure related to a product, likely intended to deceive the user into visiting the malicious URL. No scripts were extracted, but the presence of external URIs and the overall detection by security tools indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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=chicco+keyfit+30+zip+air+cover
    • https://zubosevofugojat.weebly.com/uploads/1/3/4/3/134307347/laluminuginotonin.pdf
    • https://nedetuvozuwe.weebly.com/uploads/1/3/4/6/134699612/kijovepazim.pdf
    • https://neletataw.weebly.com/uploads/1/3/1/3/131398134/nevajezo.pdf
    • https://ralubimuxafoku.weebly.com/uploads/1/3/4/3/134373731/difarawumeme_rebaxetudisix_majozezeses.pdf
    • https://nivakodet.weebly.com/uploads/1/3/4/3/134330266/e807c43.pdf
    • https://webebusili.weebly.com/uploads/1/3/0/9/130969565/nevawalatanamijugaj.pdf
    • https://cdn.sqhk.co/mogezunir/jjeha4L/ralphs_ice_cream_cake.pdf
    • https://vupixesit.weebly.com/uploads/1/3/2/7/132740805/felidebixoxuz-lonokupuvunuje-jodupepotobem-dikujez.pdf
    • https://tufuziboserivu.weebly.com/uploads/1/3/1/6/131636644/piwinepugugebo_wozix_kuduselibipede_pufinij.pdf
    • https://cdn.sqhk.co/nilimijano/XM0idoN/rain_crazy_car_racer_australia.pdf
    • https://cdn.sqhk.co/pulovafafita/hRjdwge/80927545168.pdf
    • https://nelizebowi.weebly.com/uploads/1/3/4/7/134734992/raxabibekevilufake.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://tosurok.myartsonline.com/benzoxazole_derivatives.pdf
    • http://gavojomizam.epizy.com/c_p_u_ki_full_form.pdf
    • http://tujupifirafadus.myartsonline.com/frise_chronologique_mouvements_littraires.pdf
    • http://navebulaj.epizy.com/27244527100.pdf
    • 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_off0000df9b.bin
fafa694e01327d14d72d9512f71d7b20a531e42916ce92ab45be8bb8b5b87c6d
pdf-font-stream PDF embedded font (sfnt) at offset 0xDF9B 5380 bytes
font_01_sfnt_off0000f200.bin
f02b1fb1e5900ebae6e09476d64673ac783bdcee99bdf5d27dfac04e78048675
pdf-font-stream PDF embedded font (sfnt) at offset 0xF200 10344 bytes