Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae4c410e531252ec…

MALICIOUS

PDF

76.1 KB Created: 2021-03-21 20:40:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b6c4d7ae89a64c63f6c09cb2def4a86 SHA-1: 2ef61231c2816361ed0504b31fd7924821635a9f SHA-256: ae4c410e531252ec326f3eb850c9505822f27af3bdc2643e95ffa88c4c6378b9
96 Risk Score

Malware Insights

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

The file is a PDF document that contains a URL pointing to a suspicious domain, identified by heuristics as an external URI and an embedded URL. The ML classifier and ClamAV detection strongly indicate maliciousness, likely a phishing attempt to redirect users to a malicious site. No scripts were extracted, but the presence of the external URI suggests an attempt to download a secondary payload or redirect the user to a phishing page.

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://xezojetit.ru/award?keyword=account+manager+responsibilities+pdf
    • https://cdn.sqhk.co/pegidago/xl8jiAF/zumelujimanejimosoj.pdf
    • https://cdn-cms.f-static.net/uploads/4461201/normal_6040f1e3c5942.pdf
    • http://gakofanotizukab.22web.org/20_phrasal_verbs_with_sentences_and_meanings.pdf
    • https://cdn-cms.f-static.net/uploads/4418985/normal_60395a0be4513.pdf
    • https://cdn-cms.f-static.net/uploads/4365607/normal_5fe78e5a5557f.pdf
    • http://spindlndou.space/94078796755nmnpg.pdf
    • https://cdn.sqhk.co/ketifoseja/jiTjdjg/turbo_diesel_price_philippines.pdf
    • https://cdn.sqhk.co/ramejolir/sMI6iah/ghost_hunters_full_movie_download.pdf
    • http://remontvorot24.com/2002_vw_passat_owners_manual4rr7o.pdf
    • https://cdn.sqhk.co/vatukaso/f3ngihc/notaxedigatawewotevufeser.pdf
    • https://cdn.sqhk.co/gajamomol/jjhnQn3/influenza_treatment_guidelines_2017.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://folizel.epizy.com/b._a_pass_movie_moviescounter.pdf
    • https://s3.amazonaws.com/dixaleko/79158806077.pdf
    • https://s3.amazonaws.com/fuzafuzeruwit/84116629986.pdf
    • https://e7f45dcf-1957-410e-85b1-216e85a225c4.filesusr.com/ugd/a2c2bc_a805b8d035ab496a84d310f0a33ec202.pdf?index=true
    • https://ced6af22-cf5f-4df0-9cd6-2d424634d287.filesusr.com/ugd/3eed2b_19d7b98ca44f4481922bf3531e15beaf.pdf?index=true
    • https://37976aa0-f55f-47d3-847a-8d185b13ebf6.filesusr.com/ugd/1d6212_86f9751e84154848bf2857c05a207ad8.pdf?index=true
    • https://s3.amazonaws.com/vukumesoj/adaptive_defense_360.pdf
    • https://s3.amazonaws.com/jixeremipet/gta_san_andreas_cheats_ps4_trophy_guide.pdf
    • http://zulexesovo.epizy.com/dapofi.pdf
    • https://s3.amazonaws.com/xilasisefi/alchemist_lab_report.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_off0000ed8c.bin
c9fcad15ec41513c644b11a75c302768f55a5b602235cf52bf343a6df17501ec
pdf-font-stream PDF embedded font (sfnt) at offset 0xED8C 5604 bytes
font_01_sfnt_off0001007e.bin
1339da0a8b844abf8d61e33366ba60f827681f15cdebf6d630f7165cc1c8bde1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1007E 10252 bytes