Malicious PDF — malware analysis report

Static analysis result for SHA-256 37d8ddea293203b4…

MALICIOUS

PDF

86.4 KB Created: 2021-03-24 18:19:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cf8b0a62d4640d5562620025abc09f9c SHA-1: e60f7d61f1fb7c2db0305fc4e863a08b5a45c306 SHA-256: 37d8ddea293203b49c59d634b056726e19d3fb526620aeea2ebfba0a5d9ba7f7
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 ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains metadata suggesting it is a PDF related to 'Allegra xarope bula pdf', likely a lure to disguise the phishing attempt.

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/award?keyword=allegra+xarope+bula+pdf
    • http://abzac.me/infinix_note_4_price_in_nigeria0ir6f.pdf
    • http://xitabijasava.getenjoyment.net/the_analysis_and_design_of_linear_circuits_solution_manual.pdf
    • https://static.s123-cdn-static.com/uploads/4407788/normal_5fccc93bb6111.pdf
    • https://cdn.sqhk.co/disumuneriva/AFgeNja/russian_cars_priorik_2.pdf
    • http://sijubuwejipamun.mywebcommunity.org/wulerelufivunolesopoj.pdf
    • http://sadinexiwa.mygamesonline.org/juzufekajenu.pdf
    • http://hookup757.fun/masonry_wall_design_spreadsheet8v6ta.pdf
    • https://static.s123-cdn-static.com/uploads/4384655/normal_5fecd4933a5dd.pdf
    • https://cdn-cms.f-static.net/uploads/4477147/normal_60300b0132810.pdf
    • https://static.s123-cdn-static.com/uploads/4369524/normal_5fef472204a64.pdf
    • http://rolapisi.scienceontheweb.net/clause_49_of_listing_agreement_2020.pdf
    • http://mifirejetevina.getenjoyment.net/1575745640.pdf
    • http://zhenskiizhurnal.ru/el_arbitraje_internacionalq7542.pdf
    • https://cdn-cms.f-static.net/uploads/4447095/normal_60504f937e6f3.pdf
    • https://cdn.sqhk.co/kedilexele/OhdIiig/aurora_missile_design.pdf
    • http://getbuiss.online/zoxasikokugen9c2bj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/1f11fb13-a1ec-4d7f-bda6-3d503342719c/50484603687.pdf
    • https://uploads.strikinglycdn.com/files/86303065-c02d-4acf-a319-b0816d432a3e/67755279767.pdf
    • https://uploads.strikinglycdn.com/files/c07675cf-9ff3-41e4-b929-b97d8a9bcfa7/como_hacer_un_archivo_de_imagenes.pdf
    • https://uploads.strikinglycdn.com/files/a2da81e6-ea92-42b8-b05f-4766a90af8ee/war_of_the_worlds_original_movie_poster.pdf
    • https://uploads.strikinglycdn.com/files/1c817018-2369-4e08-9dc1-8c578ae73990/2015_jeep_cherokee_service_manual.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010211.bin
26aca41a1a90fabeb66ec417d2370e6dad417cea12ef19620437378c65dc7db0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10211 4876 bytes
font_01_sfnt_off000112b7.bin
f1d7f6c949ca6d7d5062b27938eb48affef621132cec04ffb5d27745cb468ff8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x112B7 14488 bytes
font_02_sfnt_off00013ccc.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13CCC 4324 bytes

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