Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c966eb3a164df1b…

MALICIOUS

PDF

158.7 KB Created: 2021-04-03 14:36:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 4ea4207fd611bf042615d1cf9fe0b2e6 SHA-1: 6a749b3336a4a5d486f561e93530a5117a820106 SHA-256: 5c966eb3a164df1bc7ecf9cb09b3b14d04f3d44c05df0e32f2ac66310b7b6c6f
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to a book title, suggesting a phishing attempt to drive traffic to the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://baarspo.ru/award?keyword=jorge+luis+borges+aleph+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4422637/normal_5ff007dc8f7e8.pdfIn PDF document text
    • https://cdn.sqhk.co/vuwonesi/jgxgi98/super_adventure_box_skins.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414358/normal_5fdebca00bd08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408871/normal_5fd70e314f6d1.pdfIn PDF document text
    • http://xexufonek.iblogger.org/xaledunobagolevoga.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387035/normal_5feb011227b59.pdfIn PDF document text
    • https://cdn.sqhk.co/manaruparil/6apjbU9/lufinitutobuluja.pdfIn PDF document text
    • https://cdn.sqhk.co/faserekino/cppgeif/zisizaxologogeg.pdfIn PDF document text
    • https://cdn.sqhk.co/jesisoritet/jdgiiej/border_patrol_san_diego_recruiter.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371247/normal_6064ae15cc8e4.pdfIn PDF document text
    • https://cdn.sqhk.co/sewetotab/jdQe5Fg/mawolu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lewuli/niv_study_bible_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/gonorrhea_and_chlamydia_screening_guidelines.pdfIn PDF document text
    • http://ginubav.epizy.com/centrifugal_force_experiment.pdfIn PDF document text
    • https://s3.amazonaws.com/wuxupewu/hplc_agilent_1100_manual_en_espaol.pdfIn PDF document text
    • http://jerasopel.epizy.com/mugamitewezofu.pdfIn PDF document text
    • https://s3.amazonaws.com/lazolu/new_bengali_comedy_movie_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/wobuzisibal/96333869249.pdfIn PDF document text
    • http://dolizanawuw.epizy.com/mutibekobobozalupavag.pdfIn PDF document text
    • https://s3.amazonaws.com/tokafanawa/why_is_my_frigidaire_front_load_washer_not_draining.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/new_canada_food_guide_2019.pdfIn PDF document text
    • http://walagezumeg.epizy.com/zitujunuga.pdfIn PDF document text
    • https://s3.amazonaws.com/lemefofutomapox/chiang_mai_map.pdfIn PDF document text
    • https://s3.amazonaws.com/tobaziw/43549898584.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/africa_wild_animals_video.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/dish_wally_settings.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/direct_indirect_object_worksheets_grade_6.pdfIn PDF document text
    • https://s3.amazonaws.com/nodetuxapabara/sabamofipedilemasuzibuxug.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23080 5432 bytes
SHA-256: b04658a38006df98e0491a8ac8b9ec49d33d06f2ee7150c406c425bc6c4b54b4
font_01_sfnt_off000242ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x242EF 12240 bytes
SHA-256: f58586c62ef80b0f3439836e5d42039a80d102b5fe7b6efdb88e60bc03c392ee

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