Malicious PDF — malware analysis report

Static analysis result for SHA-256 564603dedda520fb…

MALICIOUS

PDF

74.3 KB Created: 2021-03-10 01:37:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 70e809fae76da932dc12cb419f5b18f1 SHA-1: 991a7677aa63b002176befbeaf6af7b81f527e1e SHA-256: 564603dedda520fb94d4270053ab4b44df8381a3219adad20749c5bb3a743f4f
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, with a primary focus on luring users to download content from domains like 'xajibur.ru' and 'vvinorama.website'. The document body, though heavily obfuscated, suggests a lure related to free book downloads, aligning with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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
  • 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://xajibur.ru/award?keyword=stormie+omartian+books+pdf+free+download PDF link annotation
    • http://vvinorama.website/90912532218u6fum.pdfIn PDF document text
    • http://jilet2.club/ps_plus_monthly_games_septembereo5eu.pdfIn PDF document text
    • http://manthoughtswebsite.website/is_light_dead_in_death_notehnlza.pdfIn PDF document text
    • http://monongzhlh.space/a_snow_fort_too_far0oreb.pdfIn PDF document text
    • http://item-mask.top/peavey_sanpera_1_foot_controllerxni94.pdfIn PDF document text
    • http://vengriya.space/ralunuwosukomutubobup0fb.pdfIn PDF document text
    • http://bullbananavannaone.xyz/napebolarth9p.pdfIn PDF document text
    • http://laitlabs.pro/dotalijufewojurkb3hp.pdfIn PDF document text
    • http://winoraama.site/the_education_of_a_value_investory1txn.pdfIn PDF document text
    • http://wumorumomu.22web.org/64162040911.pdfIn PDF document text
    • http://onenature.space/reflection_and_refraction_quizr6b1j.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/edadb01d-06dc-4d1b-bfe2-8878ff396708/garmin_nuvi_40lm_gps_manual.pdfIn PDF document text
    • https://80b2a579-f9ed-4aa0-b91a-ac3c8973c086.filesusr.com/ugd/353d00_1c10119da8e6438e86c45cda49f2d5f3.pdf?index=trueIn PDF document text
    • https://c0cead0d-5248-483d-940e-95cc3acd9bde.filesusr.com/ugd/20d83a_568a172d701640fe948a03daae0902c6.pdf?index=trueIn PDF document text
    • http://nupopejif.epizy.com/avatar_music_indonesia_mod_apk.pdfIn PDF document text
    • http://moxurux.epizy.com/finalisation_of_accounts_steps.pdfIn PDF document text
    • http://naxilolebepup.epizy.com/how_to_put_together_a_stackable_washer_and_dryer.pdfIn PDF document text
    • https://ebd73b9a-b255-48a5-b781-2bd84b483b4c.filesusr.com/ugd/956c05_07455da64e904a44978dd87e819cc82a.pdf?index=trueIn PDF document text
    • https://30c74dc1-c3f2-4e71-8253-1ec84f3b94e1.filesusr.com/ugd/b8c6fa_b8283ea19f5f4a568ee34c0879780c3e.pdf?index=trueIn PDF document text
    • http://xalovizavana.rf.gd/18049396692.pdfIn PDF document text
    • https://6376acfe-5884-4251-b3d5-19a03c044549.filesusr.com/ugd/de3d83_70faac6adb9f4c5ea36e131e8765f2ae.pdf?index=trueIn PDF document text
    • https://9cfe8934-cc69-4f76-a0d0-2e9849ea4530.filesusr.com/ugd/fd9558_ed6872c7e5024b368e4dbcfe94505bdd.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0daa7b5b-cf9d-4e2b-929d-4d170c974380/harrington_on_holdem_volume_ii.pdfIn PDF document text
    • https://9c12218e-e157-4070-b33f-4467b3cb42bb.filesusr.com/ugd/0c60a0_ef05ca22d2164f989eb1876900aaf633.pdf?index=trueIn 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_off0000e41d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE41D 5584 bytes
SHA-256: 93bb0ebeb32cbf5e4e8fa5cfc132e8a2a993425c364a4355cfb4d24c4b5cb281
font_01_sfnt_off0000f70e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF70E 10632 bytes
SHA-256: df62d6d9cf86187d5f0580714f06e31e622f585f39eb6c38b6f7c35037db9940