Malicious PDF — malware analysis report

Static analysis result for SHA-256 a449e64faa1a5691…

MALICIOUS

PDF

80.4 KB Created: 2021-04-05 07:33:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: bc347f20f97b5241fd7257d216356968 SHA-1: 535c858a092f3c74d338632736d3d16c26849308 SHA-256: a449e64faa1a56910ac524088f587e17513f57d127ebd40ebe1526884d101431
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating it's a phishing trojan. The PDF contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into downloading further malicious content. No scripts were extracted, but the presence of an external URI suggests a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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/aws?utm_term=one+child+torey+hayden+free+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4491451/normal_5fc6ae44ee66a.pdfIn PDF document text
    • http://copyrighthelpbusiness.net/a_certification_for_dummies_5th_edition98fh6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365584/normal_603b1b1af1d61.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486963/normal_5ffb4721d081e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384028/normal_6013239c66d3a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446635/normal_5fcd777a743f0.pdfIn PDF document text
    • http://tehnopolis.org/pubaxirbykg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492286/normal_60341b2ad3608.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406777/normal_60127f09a9feb.pdfIn PDF document text
    • http://vannabanyavsedela.xyz/ejercicios_de_estadistica_3_eso_resueltosal682.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369310/normal_6031664299329.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487888/normal_60118db120ad4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447912/normal_60462f36389d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467571/normal_605c4a845e045.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448991/normal_6022eb4c63699.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422909/normal_60502a5bb4248.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458623/normal_5fd78a74a9634.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416665/normal_6068a43048bc0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443610/normal_5fe11222481da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413975/normal_602912cc6edae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392877/normal_600a7aeebe60a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fadadedezeker/45521590518.pdfIn PDF document text
    • https://s3.amazonaws.com/lukepepe/vedusafodosobefa.pdfIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/can_you_print_with_only_black_ink_cartridge_hp.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF5 4980 bytes
SHA-256: cae14ed6f27d7db62bf95177b9c39288b670bad5bd1ffd2da46043916e3276be
font_01_sfnt_off0000fedd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEDD 11096 bytes
SHA-256: 6e4c5e18fa6abc0f6af847e820845595b2ca47e497ee6ea322acfb04cd198af2
font_02_sfnt_off00012437.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12437 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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