Malicious PDF — malware analysis report

Static analysis result for SHA-256 d31cf59e45bfb1dc…

MALICIOUS

PDF

67.2 KB Created: 2021-04-05 19:38:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a6d1852d221faf3e9dfd239f57a9a1c9 SHA-1: b9274e3290627ba17d76acadcfbc384f9f62ce10 SHA-256: d31cf59e45bfb1dcef2110f9e261c380138de4fede578cc9a828a3ecb488036b
136 Risk Score

Malware Insights

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

The PDF document contains heuristics indicating an advance-fee scam lure, specifically mentioning lottery and parcel delivery requirements. It also embeds a URL pointing to a 'world of tanks gold generator' which is likely a phishing or scam lure. While no scripts were directly extracted, the PDF structure and embedded URI suggest it is designed to trick users into visiting malicious sites, likely for financial gain or credential theft.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pelibifir.ru/wix?keyword=world+of+tanks+gold+generator+ps4
    • http://carinsusa.info/spectrum_math_workbook_grade_8_free92cvz.pdf
    • http://about-central.com/75313527200lulb7.pdf
    • https://cdn-cms.f-static.net/uploads/4417122/normal_60657226efd65.pdf
    • https://cdn-cms.f-static.net/uploads/4387924/normal_602cac2946229.pdf
    • https://static.s123-cdn-static.com/uploads/4460471/normal_5fe422e35024f.pdf
    • http://stopnutristrike.ru/14484275196lm0up.pdf
    • http://coolstudent.space/maricopa_county_recorder_parcel_searchbtz53.pdf
    • http://freds.space/subnautica_where_to_find_kyaniteplexq.pdf
    • https://cdn-cms.f-static.net/uploads/4459035/normal_6033a64eb3f25.pdf
    • http://ozalupa.space/bridge_house_school_uniformh9ziz.pdf
    • https://cdn-cms.f-static.net/uploads/4366625/normal_60585949152dc.pdf
    • https://cdn-cms.f-static.net/uploads/4466662/normal_601c8a022f045.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/39b01fea-26dc-43dc-8fa8-2b61c8661e83/74581870649.pdf
    • https://uploads.strikinglycdn.com/files/65a32b13-3286-43ad-875b-8c814085df97/una_taza_de_harina_de_avena_en_gramos.pdf
    • https://s3.amazonaws.com/fejakixoweka/catering_service_agreement.pdf
    • https://s3.amazonaws.com/popilo/nepizinamikadukimovedav.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c000.bin
d6ec37e7327680ecd9f76b05021fb30d8c386abd7b7e71e288060679f164dd5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC000 5112 bytes
font_01_sfnt_off0000d18d.bin
335ac2d85cbf927094e0aca2533ed729752f02aa7c01e965a35a4e9236429eaa		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD18D 9396 bytes
font_02_sfnt_off0000f1df.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1DF 4324 bytes

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