Malicious PDF — malware analysis report

Static analysis result for SHA-256 c68fa49a1699647d…

MALICIOUS

PDF

75.1 KB Created: 2021-04-15 07:59:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04db7bbdf2e05290cbfc7010885b020c SHA-1: 80bd35410d142e0e08d1d48d75c91e8e2fcd3729 SHA-256: c68fa49a1699647d611360eea4f80c16ba7329468eb0cf1342330a275fa11c5c
96 Risk Score

Malware Insights

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

This PDF document contains an embedded URI that redirects to a URL associated with phishing activity. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for credential harvesting or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to exploit users by presenting a seemingly innocuous topic to mask a malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/strik?utm_term=how+to+set+alarm+on+casio+watch+f-91w
    • http://vovpomnim.ru/gubedotikoleninobuzq8p2d.pdf
    • https://cdn.sqhk.co/xoradofexul/dg6tjat/50840401315.pdf
    • https://cdn-cms.f-static.net/uploads/4379973/normal_604d0ed38509d.pdf
    • https://gebogunuwol.weebly.com/uploads/1/3/4/7/134732963/5112350.pdf
    • https://cdn.sqhk.co/womawuxinuge/fgcBVia/cool_roblox_studio_scripts.pdf
    • https://static.s123-cdn-static.com/uploads/4490256/normal_5ff392fbda444.pdf
    • https://guwidavimup.weebly.com/uploads/1/3/4/8/134893931/negikukovo-naxuv-wonowisona.pdf
    • https://cdn.sqhk.co/wifavizen/cBggidK/95716192003.pdf
    • https://vowagogo.weebly.com/uploads/1/3/5/3/135307183/7e12eb6dbf2.pdf
    • https://cdn.sqhk.co/nasanoroge/HCVhbji/dineparoralitopawasatifa.pdf
    • http://car-test.pro/biology_practical_book_class_11_gseb23sv4.pdf
    • http://fewutame.getenjoyment.net/lamagitolamimenenepenena.pdf
    • http://boost-store.net/zukumyao2d.pdf
    • http://ilook.market/merujaxikagovone18lsn.pdf
    • https://cdn-cms.f-static.net/uploads/4487200/normal_606b8f76af01c.pdf
    • https://guduzuzej.weebly.com/uploads/1/3/1/6/131606672/019655fa10b42f0.pdf
    • https://japejezapunat.weebly.com/uploads/1/3/3/9/133999519/1682127.pdf
    • http://gikodarekegov.mywebcommunity.org/sixth_mass_extinction.pdf
    • https://kofivenemiwelew.weebly.com/uploads/1/3/1/3/131380814/lozojej-luzuzuxag-mupigulilo-fatulifepazas.pdf
    • http://pedron.fun/td_bank_swift_code_for_wire_transfer6rtyp.pdf
    • https://cdn.sqhk.co/wexunaveb/dZoij94/knife_hit_game_free.pdf
    • https://jovusejafuraz.weebly.com/uploads/1/3/1/8/131856080/98517d1db05a33c.pdf
    • https://cdn-cms.f-static.net/uploads/4408707/normal_600d674f9472e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://mugomodag.atwebpages.com/majemifej.pdf
    • http://kaloruligot.onlinewebshop.net/79768531101.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_off0000e515.bin
278fdae1c972598f13e2b552fd0276ab3285c798329d2dc64e2dd8091ee3cb1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE515 5416 bytes
font_01_sfnt_off0000f771.bin
f2a424904d7b5131958d3b642758f2ef0ef82492372e35dc781613abb0592cfa		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF771 11636 bytes

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