Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d0b0ddc633bb4ef…

MALICIOUS

PDF

77.4 KB Created: 2021-03-03 17:40:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a9334172575803ae41a74cdeae169ba7 SHA-1: 914e69e75804d8fe724e2ff44b60fe91fd3efcab SHA-256: 8d0b0ddc633bb4ef4da08d29c9a9c6ca3977ff3fcaf8add3a5bd7c336e423eb0
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'soxebez.ru', which is likely used for phishing or to download a secondary payload. The document body, though heavily obfuscated, suggests a lure related to a book summary, aligning with common social engineering tactics.

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://soxebez.ru/123?utm_term=you+can+negotiate+anything+book+summary+pdf
    • https://cdn.sqhk.co/vuvupewog/Jha7g1P/bijupuvubimi.pdf
    • http://constructionhouse.info/dbz_abridged_android_16_speechtupxu.pdf
    • https://cdn.sqhk.co/tejilunuf/gfggigb/kordexa_4_mg_tablet.pdf
    • https://cdn.sqhk.co/tezofugowura/jc5Vxia/buyback_offer_letter.pdf
    • https://cdn.sqhk.co/riwewazisara/hegfVLk/18514589466.pdf
    • https://cdn.sqhk.co/wobivada/ifPiejf/wiborekosupijewazurorezu.pdf
    • https://cdn.sqhk.co/wirumedaba/sU3hd8X/niwawekavilowafejutigonid.pdf
    • http://servisvds.ru/do_pisces_play_gamesquxro.pdf
    • https://cdn-cms.f-static.net/uploads/4393018/normal_601cddbfc0329.pdf
    • https://cdn-cms.f-static.net/uploads/4371799/normal_6026da1b1fef2.pdf
    • https://cdn.sqhk.co/mujekesire/eRBiahj/befazus.pdf
    • http://flathead.us/pevanoxozafirirejebta55y.pdf
    • https://cdn.sqhk.co/bomemenun/ljfiwib/99738517193.pdf
    • http://kittyplay.online/67299090640uukl2.pdf
    • https://cdn.sqhk.co/gulaxemetila/jdfBihT/to_do_list_software_free_download_windows_10.pdf
    • https://cdn.sqhk.co/vunebapenuj/ejbHLig/93289171005.pdf
    • https://cdn.sqhk.co/pixafosabow/hhhdicR/3436682892.pdf
    • https://cdn.sqhk.co/lunemitibojo/Rhaihji/65052627177.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xelimewat/spotify_music_reddit.pdf
    • https://s3.amazonaws.com/tumuzu/wizovurij.pdf
    • https://s3.amazonaws.com/domegagowevag/business_in_a_box_templates_free.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_off0000ee20.bin
2038fd6cfd0f5cc7726e539783e34a8e16d19da7b4748420fe902cb500b11b0a
pdf-font-stream PDF embedded font (sfnt) at offset 0xEE20 5804 bytes
font_01_sfnt_off000101c1.bin
7b289e1528bebf8c7560017300539cc55aa647955569b8c5952299027d90f4a0
pdf-font-stream PDF embedded font (sfnt) at offset 0x101C1 11256 bytes