Malicious PDF — malware analysis report

Static analysis result for SHA-256 f320a73f8820ab71…

MALICIOUS

PDF

75.7 KB Created: 2021-03-31 21:42:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94797a02229e401987316d981af50b92 SHA-1: e9b32907fd9f27abba57cc4bbfe3e208d1ec0dd5 SHA-256: f320a73f8820ab7155fd34c060b05ee90720d329a7bd51959e2fd50de081d122
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of embedded URLs, including one pointing to 'zajinet.ru', suggests the document is designed to redirect users to potentially harmful websites. While no scripts were explicitly extracted, the PDF format itself can host malicious JavaScript, which is often used to exploit vulnerabilities or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://zajinet.ru/strik?utm_term=ford+mustang+manual+transmission+philippines
    • http://italywow.info/ways_to_listen_to_music_offline_on_iphoneq0tyz.pdf
    • https://cdn.sqhk.co/wipedekis/oYggghJ/zaworopi.pdf
    • https://bexenexitefixu.weebly.com/uploads/1/3/4/7/134725849/bodebe.pdf
    • http://xemopubuga.iblogger.org/bupabuf.pdf
    • https://jemexegotida.weebly.com/uploads/1/3/4/4/134464186/9522564f1a49f83.pdf
    • https://cdn.sqhk.co/pajugeluj/ihePqAO/37172745615.pdf
    • http://easterthjg.com/37951222310vefkf.pdf
    • https://sadebisoj.weebly.com/uploads/1/3/2/3/132302749/lowopez.pdf
    • https://cdn.sqhk.co/lokojagivel/Dfu3rja/38057611900.pdf
    • https://fuwupizur.weebly.com/uploads/1/3/5/3/135390256/1809342.pdf
    • http://nanolenka.xyz/video_4k_androidzrwr5.pdf
    • http://kubodir.22web.org/kiviwamebezuvokebuvipofa.pdf
    • https://lagomumudalo.weebly.com/uploads/1/3/2/6/132681699/9643798.pdf
    • https://bivixogerixud.weebly.com/uploads/1/3/4/4/134469213/3872580.pdf
    • https://gosabotef.weebly.com/uploads/1/3/4/3/134332229/8b68fafa.pdf
    • http://vilopeg.xyz/cc_th__ca_ng_namk2bhy.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/povelenavuviw/nefirojabo.pdf
    • https://s3.amazonaws.com/xufujofaleki/sengoku_basara_2_heroes_wii_iso.pdf
    • http://bixodog.rf.gd/participle_adjective_list.pdf
    • http://kimaponupotowi.rf.gd/30618791032.pdf
    • http://fusatepalu.epizy.com/77804451737.pdf
    • https://s3.amazonaws.com/fonazuzixagizir/57016265350.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_off0000ebeb.bin
2014d8e3ae98c78322ae801f3e57a1396ac74ee4a8a88ef6e00d96d87b85854b
pdf-font-stream PDF embedded font (sfnt) at offset 0xEBEB 5328 bytes
font_01_sfnt_off0000fddf.bin
0fee285a7b29e0db72dd5fa87afd94ff0a794f3c2f69c7c03d935fd8af69ef9d
pdf-font-stream PDF embedded font (sfnt) at offset 0xFDDF 10260 bytes