Malicious PDF — malware analysis report

Static analysis result for SHA-256 8afd749e30c6e0e3…

MALICIOUS

PDF

95.4 KB Created: 2021-03-22 04:16:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 96235f38e6c37fd7e356ce81a059495f SHA-1: 1017fe46b650a5c9280a1e1e207d5c1aba2b9e1d SHA-256: 8afd749e30c6e0e3ac1c7d219a06b2189a74379aeaea93d015134e7f85f49da8
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ML and ClamAV, indicating malicious intent. It contains an embedded URI pointing to 'https://leonvi.ru/award?keyword=caroubier+maroc+pdf', which is likely used to redirect users to a malicious site. The document body is heavily obfuscated, but the presence of external links and the overall detection suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://leonvi.ru/award?keyword=caroubier+maroc+pdf PDF link annotation
    • http://xajoraxi.22web.org/pigogukujugumukuxe.pdfIn PDF document text
    • http://guferesuzas.22web.org/education_portal_e_kyc_report.pdfIn PDF document text
    • http://linogozajasupe.22web.org/creative_cloud_stuck_at_0.pdfIn PDF document text
    • https://cdn.sqhk.co/fusunusol/gekngf9/70939349802.pdfIn PDF document text
    • https://cdn.sqhk.co/wubunepan/hctBjhP/61048658388.pdfIn PDF document text
    • https://cdn.sqhk.co/tumowara/gcgejd5/kasumusafogekarevilode.pdfIn PDF document text
    • https://cdn.sqhk.co/fupokiwil/diiAjbk/vinolitogidejopelade.pdfIn PDF document text
    • http://pidivumik.22web.org/game_criminal_case_mod_apk_2018.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/a68b4094-59bf-4a66-b83b-02ce9bba276f/paul_richer_artistic_anatomy_english.pdfIn PDF document text
    • http://vaxutere.rf.gd/90867685363.pdfIn PDF document text
    • http://kozinid.epizy.com/lejober.pdfIn PDF document text
    • http://bolumopip.rf.gd/44949730117.pdfIn PDF document text
    • http://wesaxerofirivo.epizy.com/second_law_of_thermodynamics_derivation.pdfIn PDF document text
    • http://kakapefetabol.rf.gd/27700870630.pdfIn PDF document text
    • http://sogezuwapisuza.epizy.com/wilejaleli.pdfIn PDF document text
    • http://depevabevidot.rf.gd/plenty_of_fish_premium_apk.pdfIn PDF document text
    • http://jaguzawa.rf.gd/mizupulozokijanedanugigi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4cc331d-a8b0-45e5-a31f-e531eaf4a0a4/adobe_premiere_elements_2020_tutorial_deutsch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/619b1fbd-e56e-42f0-8560-7a5acb8d102d/what_is_the_main_goal_of_the_affordable_care_act.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae435bbb-a431-48ff-916b-28df58f9cf94/64663620570.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89fb571c-41f4-4e7b-9910-17c48357eaf3/why_should_we_hire_you_best_answer_for_fresher.pdfIn PDF document text
    • http://beritoka.rf.gd/77497512759.pdfIn PDF document text
    • http://laruxikoxuvar.epizy.com/nofijuzixim.pdfIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011862.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11862 5136 bytes
SHA-256: 6896be8769be287cf68116f89e8faaf8286c05785ae9746adb6a226b37632b42
font_01_sfnt_off000129bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129BC 14596 bytes
SHA-256: fddcfc21a195dc166cb90c793b94de6b838a62e3a0a8167f4487a5477b5c1330
font_02_sfnt_off00015754.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15754 16612 bytes
SHA-256: 6ea92a570ba7e829edfae0138f1d1e8e81b86ddabe1ec39272a094b2178666dc

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