Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4a8207cfc188a7f…

MALICIOUS

PDF

83.4 KB Created: 2021-02-28 12:03:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75d070595a510d228507d8bd1dd27731 SHA-1: 68eb940838e82ad38725bb75802409648fa232da SHA-256: a4a8207cfc188a7f62f05bd2aed9b231de94f34342a6740075f59955c7291469
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document exhibits characteristics of an advance-fee scam, using lures related to lottery winnings or parcel delivery to trick users. It contains an embedded URL pointing to a suspicious domain, likely intended to lead the user to a malicious site or download further malware. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://mezovuduw.ru/wix?keyword=street+food+tycoon+cheats+android
    • https://piworanup.weebly.com/uploads/1/3/2/6/132681558/vevuzobakab.pdf
    • http://familyit.info/el_contexto_escolard5hcl.pdf
    • https://seritixatot.weebly.com/uploads/1/3/1/0/131070849/xexotegariwaxajo.pdf
    • https://cdn.sqhk.co/kimefutif/khgziaF/galaxian_3_ps1.pdf
    • http://puveputado.sportsontheweb.net/myers_briggs_personality_types_of_brooklyn_nine-nine_characters.pdf
    • https://cdn.sqhk.co/filodomazora/g2EijQT/complete_ear_trainer.pdf
    • http://idealslimitaly.site/number_tracing_worksheets_freef8y1a.pdf
    • http://ecoterritory.store/mutujabigat7mk9z.pdf
    • https://cdn.sqhk.co/nawakema/dhdc7C8/64738425913.pdf
    • https://cdn.sqhk.co/nagebagem/gggjjKM/dagavinikufak.pdf
    • https://sagakoto.weebly.com/uploads/1/3/0/8/130814189/raxelov-kepalu.pdf
    • http://zitirisiz.mywebcommunity.org/87423719573.pdf
    • https://cdn.sqhk.co/xixujipum/ghfhcuG/80765750713.pdf
    • https://cdn.sqhk.co/vibisidumes/hPheXhh/sowolimixolorojopameda.pdf
    • http://fafijitesulexiz.mygamesonline.org/structured_clinical_interview_for_dsm-5r_personality_disorders_scid-5-pd.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • 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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5a1.bin
31595ef4ebabbce1b9ece6c06e9a0c839927ccf78afcdadea0b677223569d985		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE5A1 5072 bytes
font_01_sfnt_off0000f6d1.bin
e182903e9baeaa1dd51e0271607a7d0f76fff56949b0bb3c84c55608f192ee1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6D1 11124 bytes
font_02_sfnt_off00011cdc.bin
9af6fc3bf9d751f70540aea0fa47faa159a3604992cda23d2adcda3ffc5346b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11CDC 16092 bytes
font_03_sfnt_off000131a3.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x131A3 4324 bytes

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