Malicious PDF — malware analysis report

Static analysis result for SHA-256 c456280057802be6…

MALICIOUS

PDF

79.6 KB Created: 2021-03-14 22:17:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 9a38f1b53a980361ed38d0bba5bfe814 SHA-1: 26c128e831f3fab995cfbc4e288016c9ec1772b2 SHA-256: c456280057802be62af3621aa40e51235b7881323628a1a7e54df1b8109e731d
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely to host a phishing page or download further malware. The document body, though heavily obfuscated, contains text related to disputing a credit report, indicating a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://lozipotod.ru/123?utm_term=dispute+transunion+credit+report+by+phone PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4447669/normal_6003d26b5f321.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444110/normal_5fc8464f31c53.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414156/normal_5ff79d7a62176.pdfIn PDF document text
    • http://rolapisi.scienceontheweb.net/97415917186.pdfIn PDF document text
    • http://betijeduw.getenjoyment.net/diragotasunononanenuk.pdfIn PDF document text
    • http://rawiduti.medianewsonline.com/sportspower_15_ft_trampoline_enclosure_instructions.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491688/normal_5fe597c0a29f3.pdfIn PDF document text
    • http://mikazuxo.mypressonline.com/gogojidosigesib.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456996/normal_5fc6c87f51917.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477620/normal_5fcbc41c9ac34.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461763/normal_5feb5f342aef6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426828/normal_5fc96adbe6461.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451954/normal_6046258399750.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405459/normal_603c1616851f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481397/normal_602624e8b1757.pdfIn PDF document text
    • http://gisoboxizaza.mygamesonline.org/61970183514.pdfIn PDF document text
    • http://pewadulojuba.mypressonline.com/sofiraz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417986/normal_5ffc55c0c3823.pdfIn PDF document text
    • http://veviwumifuvemuz.mypressonline.com/9158539349.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466676/normal_5fec02cc03666.pdfIn PDF document text
    • http://xevusezes.medianewsonline.com/apresentao_institucional_da_empresa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366033/normal_601fd028357f0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489407/normal_5ffcf6b94d3a0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jajogagek.atwebpages.com/2006_can_am_outlander_800_service_manual.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fbbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBBD 5368 bytes
SHA-256: d49c7a576113ebc7edb0e05f6284e200d90e105ac81f20abeef23eaf999e2371
font_01_sfnt_off00010dfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DFD 10048 bytes
SHA-256: dc65e0c61a1f69f61c0d3889652301e95fefa9534bae365e2954392405a73f9e

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