Malicious PDF — malware analysis report

Static analysis result for SHA-256 29f05f04491bcfb7…

MALICIOUS

PDF

76.7 KB Created: 2021-04-03 20:31:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 510f70f13fef00bcd6ddcdaa9a0b17e5 SHA-1: d942996a95ac3e2e328c0124f7e6633588aa2426 SHA-256: 29f05f04491bcfb7a7834e9725a5403fbf5d9631647e1ecffa3194a57404f5fb
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by ML classifiers and ClamAV as malicious. The document body, though heavily obfuscated, suggests a lure related to purchasing land, likely intended to trick the user into clicking the malicious link. No scripts were extracted, but the presence of external URIs and the high confidence verdict indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://botokaw.ru/123?utm_term=buying+rural+land+in+texas+pdf
    • https://cdn.sqhk.co/wadusazilox/g4ygggj/80634169124.pdf
    • https://cdn-cms.f-static.net/uploads/4383327/normal_603a74933430e.pdf
    • http://xejapuz.getenjoyment.net/chapter_5_activity_based_costing_and_activity_based_management.pdf
    • https://cdn-cms.f-static.net/uploads/4385869/normal_604dca5b7d08c.pdf
    • https://cdn-cms.f-static.net/uploads/4419205/normal_6067955272010.pdf
    • https://girawosanisab.weebly.com/uploads/1/3/0/7/130740609/4032c3.pdf
    • http://kidufamipowanot.mywebcommunity.org/guxob.pdf
    • https://cdn.sqhk.co/mawedabe/qib5nih/xobuvabawuzijegukavefirek.pdf
    • https://zedowegekinusil.weebly.com/uploads/1/3/3/9/133997302/zufafanodiwape-tujudowudojigi.pdf
    • https://static.s123-cdn-static.com/uploads/4490256/normal_5feef9335983f.pdf
    • https://cdn.sqhk.co/julukimesof/fBhfjaz/remix_omg_dolls.pdf
    • https://cdn.sqhk.co/tifisizeliz/esBgcjh/rimigerigiku.pdf
    • http://wusator.mygamesonline.org/child_development_stages_chart_0_16_years.pdf
    • https://cdn-cms.f-static.net/uploads/4410201/normal_605c5bdc3c785.pdf
    • https://bewosugug.weebly.com/uploads/1/3/0/8/130814774/perepenofulosu-vazin-lixomigibesiz.pdf
    • https://sekawoxovezu.weebly.com/uploads/1/3/4/0/134018239/tusabewuxobixakibeza.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://paguxesij.myartsonline.com/celestron_astromaster_90_price.pdf
    • http://sasukagisodubex.onlinewebshop.net/nanaso.pdf
    • https://uploads.strikinglycdn.com/files/2005e9bb-156d-4fb4-a3ad-0af64fbbbfab/29146367079.pdf
    • http://mozaninukokefef.onlinewebshop.net/how_to_calculate_van_der_waals_radius.pdf
    • https://uploads.strikinglycdn.com/files/44f5dcd4-b01c-4b54-9bd7-236bcc8ee4be/peguvumesuvusebijosovet.pdf
    • http://belibivizonojo.myartsonline.com/balancing_chemical_equations_gizmo_answer_key.pdf
    • https://uploads.strikinglycdn.com/files/74e7656f-3a52-4598-8ceb-65da8256bc8f/rasixuzuki.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_off0000ed5f.bin
cbbed8ac1393d9ba4804d2d1dd3e6b54baa016262d788e31c5d596d2d1dae729		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED5F 5428 bytes
font_01_sfnt_off0000fff7.bin
7b7c825a2452a05d8ea183fd0177974a9573e90923e6b39b395455994a2dba97		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFFF7 11040 bytes

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