Malicious PDF — malware analysis report

Static analysis result for SHA-256 39504c7bf8e613b5…

MALICIOUS

PDF

76.3 KB Created: 2021-03-18 19:00:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dc35e1915449e51380caf14c249036ba SHA-1: ce656a9ff8968d2538cb996eaf960bc3e6e8256c SHA-256: 39504c7bf8e613b5f9748b55f603e223298d07efae194606e5f142b5a17ab261
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 URL that appears to be a lure for a ketogenic diet guide. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of multiple unknown reputation URLs suggests a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9848

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://lozipotod.ru/award?keyword=complete+ketogenic+diet+for+beginners+pdf
    • http://drnextact.xyz/field_hockey_training_videos_youtube0neyp.pdf
    • http://foyou.store/bar_manager_training_guidef4mgr.pdf
    • http://cesaregaspari.com/big_five_personality_traits_testij888.pdf
    • http://appeal-ig.com/75944739932n6ydu.pdf
    • http://lnstgramhelpcopyright.com/410329955149zeee.pdf
    • https://cdn-cms.f-static.net/uploads/4424400/normal_604dde1fb2972.pdf
    • http://tehnoprom.org/valentines_parkrun_reportlk4ei.pdf
    • http://cardio-active.site/57967600376rqksm.pdf
    • https://cdn.sqhk.co/sobexofap/vSjjjhp/mabinogi_archery_talent.pdf
    • http://instapriz24.site/organizational_structure_powerpoint_template97asz.pdf
    • https://cdn.sqhk.co/mikedeto/jdhizji/langrisser_2_walkthrough.pdf
    • http://f1l3download.site/kupavapulk12s.pdf
    • http://zanartcc.net/what_are_the_units_of_a_and_b_in_van_der_waals_equationg0e36.pdf
    • http://titanovyi-filtr.ru/solucionario_matematicas_1_bachillerato_bruC3B1o6k3na.pdf
    • http://kindraretterath.com/ismart_110cc_engine_oil_capacity70ppi.pdf
    • https://cdn-cms.f-static.net/uploads/4409813/normal_600f40aa75c9c.pdf
    • http://poopo.ru/biwaragawugobimije478r1.pdf
    • http://neuroncraft.online/prepositions_worksheets_with_answers_for_class_9vzi83.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fofeguj/burger_hd_pictures_free.pdf
    • https://s3.amazonaws.com/sosupejuxofedo/pesubunigigi.pdf
    • https://s3.amazonaws.com/fupanabivote/xofigaragegazikuvuxowi.pdf
    • https://s3.amazonaws.com/jevopemosod/rise_of_the_kings_hack_free.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1bf.bin
3d8d8d16921562a408122ca8d9071598e628d967924efebccf6041f85f33c249		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1BF 5376 bytes
font_01_sfnt_off000103f0.bin
2d30403e5c739b3b0afa2af9c76477e3e7841c2602d8ceeea19d150121dde12f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103F0 11344 bytes

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