Malicious PDF — malware analysis report

Static analysis result for SHA-256 36e1964115109845…

MALICIOUS

PDF

176.9 KB Created: 2021-03-06 06:28:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c424fba1eaa3bf79d397758e25d777fa SHA-1: b608206eff967dbd99c0d97bc4d8617d4038a5cb SHA-256: 36e19641151098450e5e8068ff8c8b0f80426549cc4a17c2f8ca4dfbed143192
136 Risk Score

Malware Insights

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

The sample is identified as malicious by ML classifiers and ClamAV, and exhibits characteristics of an advance-fee scam. The document body, though heavily obfuscated, combined with the heuristic 'SE_ADVANCE_FEE_SCAM_LURE', strongly suggests a phishing attempt related to fake prizes or parcels. Several external URLs are present, likely serving as landing pages or download sources for further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9937

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=monty+python+japanese+translation
    • https://wamukefak.weebly.com/uploads/1/3/5/3/135324497/polupagodifeduzu.pdf
    • https://xotozefubineru.weebly.com/uploads/1/3/4/5/134576546/1743794.pdf
    • https://static.s123-cdn-static.com/uploads/4424405/normal_5ffa950d7eab4.pdf
    • http://dadivasim.sportsontheweb.net/sokalixotetexo.pdf
    • https://cdn-cms.f-static.net/uploads/4446034/normal_600bdd711351c.pdf
    • https://wozijosetat.weebly.com/uploads/1/3/1/4/131407158/de90e.pdf
    • https://static.s123-cdn-static.com/uploads/4443608/normal_5ff81ecd24647.pdf
    • https://cdn-cms.f-static.net/uploads/4500668/normal_603857daeb3b8.pdf
    • http://update-win20.online/workout_books_for_beginnersrkh6o.pdf
    • https://fubabogi.weebly.com/uploads/1/3/4/6/134617409/likitiwovuzi-vojeratojiseto-warowenapez.pdf
    • https://cdn-cms.f-static.net/uploads/4368497/normal_600aadc6c0115.pdf
    • http://krokoboko6.xyz/rivedevanumodepyedty.pdf
    • http://livecopyrightverification.com/skyrim_faster_wait_time6wbbp.pdf
    • http://stickerrus.ru/discografia_de_vicente_fernandez_descargardno4s.pdf
    • http://parrrtner.xyz/xipurusimivasewyuv2y.pdf
    • http://itash.space/agregation_interne_maths_sujets_corrigszuj4m.pdf
    • http://visionnew.xyz/jilesanutosulafimutokim967yr.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/fofeguj/the_grape_cure_by_johanna_brandt.pdf
    • https://s3.amazonaws.com/lurutopobi/37822939114.pdf
    • https://s3.amazonaws.com/piwupevivotixi/30908647418.pdf
    • http://gubadif.myartsonline.com/dell_optiplex_gx280_vga_drivers_for_windows_7.pdf
    • http://kofaxafogi.myartsonline.com/57844966455.pdf
    • https://s3.amazonaws.com/rebomedug/31900173089.pdf
    • https://s3.amazonaws.com/tirimofufemukat/rabekomifaruxo.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00026235.bin
eec2311198495a4bc353016469730966835d49679daeed18a98faa9ab15954d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x26235 2828 bytes
font_01_sfnt_off00026c3f.bin
d9b6061045e0fabd12ea5474894319e1cd4a515bfc3a21ee98ea4ec5016555f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x26C3F 4880 bytes
font_02_sfnt_off00027cd2.bin
5ade636a5f8b3ecb7f448497a482e1bd15785f3660dea6025826783c329b15da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27CD2 12512 bytes
font_03_sfnt_off0002a665.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A665 4324 bytes

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