Malicious PDF — malware analysis report

Static analysis result for SHA-256 89aa7399bfea6913…

MALICIOUS

PDF

82.2 KB Created: 2021-02-20 04:36:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c76be93b89fe6da338670f7cd6da3b4 SHA-1: e5d469a971a6e93b5368aeeb8b9e7831f992a2d0 SHA-256: 89aa7399bfea6913db110ea2bee8e3a314520e2d3812b076904812cfd4af2828
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that mimics a search result, likely intended to trick the user into visiting a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent. No scripts were extracted, but the PDF structure itself facilitates the attack.

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://seumenha.ru/wix?keyword=perl+interview+questions+and+answers+for+experienced
    • https://forakisoja.weebly.com/uploads/1/3/2/7/132740641/61371ac9.pdf
    • http://jarobadut.22web.org/zatoti.pdf
    • http://drenajkrasnodar.ru/weed_leaf_drawing_trippyrp81z.pdf
    • https://roturusuwanowus.weebly.com/uploads/1/3/4/3/134363773/nuzipekunufiru.pdf
    • https://cdn-cms.f-static.net/uploads/4420775/normal_5fd2e0c2eac2c.pdf
    • https://static.s123-cdn-static.com/uploads/4485172/normal_5fcbe1ef79763.pdf
    • https://dunokosira.weebly.com/uploads/1/3/5/3/135349308/dipowimefelajat.pdf
    • https://rarikomedos.weebly.com/uploads/1/3/4/6/134616559/kuvawivesitu_wurorex_xowarubikulopo_nejeluzizobof.pdf
    • https://static.s123-cdn-static.com/uploads/4415070/normal_5fe118a83bc25.pdf
    • https://fimegelepa.weebly.com/uploads/1/3/3/9/133999933/wusoduvope_jilokulum_todaxeb.pdf
    • https://cdn-cms.f-static.net/uploads/4486983/normal_6022aedc2a17d.pdf
    • https://static.s123-cdn-static.com/uploads/4530868/normal_5fe0b75791e19.pdf
    • http://sayseedokg.com/blockbuster_dj_skn_song6gt2l.pdf
    • http://nonretloli.site/soccer_world_cup_final_2020_pakistan3ctun.pdf
    • https://static.s123-cdn-static.com/uploads/4496216/normal_5fc7dfeaf0bb8.pdf
    • http://libidisebosuv.22web.org/university_swot_analysis.pdf
    • http://luxshop21.site/how_long_is_harry_potter_6_without_creditsn48cp.pdf
    • https://static.s123-cdn-static.com/uploads/4379049/normal_600123c3d29f9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sazevaxorofezag.epizy.com/konetef.pdf
    • http://pajogapusifured.rf.gd/como_hacer_un_panel_solar_casero_con_materiales_reciclables.pdf
    • http://xodamekexu.epizy.com/4972807268.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_off000104dc.bin
c38d27613fcc77a1ca676ca8148658a0c066d0a85643cfa6ddcdb89a697edaa5
pdf-font-stream PDF embedded font (sfnt) at offset 0x104DC 5496 bytes
font_01_sfnt_off000117b4.bin
5ca7ef4762f4186acaec86133461d3f8fc393ba6e15552c53c220332b728b0b8
pdf-font-stream PDF embedded font (sfnt) at offset 0x117B4 10240 bytes