Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f642435e3d7f384…

MALICIOUS

PDF

74.7 KB Created: 2021-02-13 18:16:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 62a2c65fbe75b674cdd2a8ce8d535ee4 SHA-1: 8ddd4b898ee5b8c1429d59b4e12b79a864813405 SHA-256: 2f642435e3d7f384471566109073fba3872a1bde38207b0c7fadc716e2273e5d
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by heuristics and a machine learning classifier as malicious. The document body, though heavily obfuscated, suggests a lure related to 'functional health patterns'. The presence of an external URI indicates an attempt to redirect the user to a potentially harmful website, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/123?utm_term=functional+health+patterns PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4421354/normal_5fce690bba518.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453329/normal_5feb56a11bc99.pdfIn PDF document text
    • https://tomovomat.weebly.com/uploads/1/3/4/6/134617768/setigam-texidana.pdfIn PDF document text
    • https://cdn.sqhk.co/roratumopiv/fiiw6ij/bovoxegu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380082/normal_5fef38352192f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452850/normal_601b8b50d54e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416664/normal_60168cee0d8c9.pdfIn PDF document text
    • https://cdn.sqhk.co/gusiloxi/jiq6Aii/walivufibo.pdfIn PDF document text
    • https://cdn.sqhk.co/bazopaxepifu/TjgmwoK/farurazuxamaxik.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383704/normal_5fd8f4c7dae8a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392868/normal_5fcba98b87633.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383128/normal_5ff8dd2681c90.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413696/normal_5ffce2eb15492.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476751/normal_5ff525dd37768.pdfIn PDF document text
    • https://cdn.sqhk.co/zupololano/dv0jaig/cnc_programming_tutorial_guide_fanuc_video_application.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/xufaxoferugod/bloody_mary_horror_full_movie.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_off0000daf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAF5 4860 bytes
SHA-256: 2c289a8c9ec5f86eb5581a4e88c9d7e19f590a0af25857bbbc4b81ff9112e0cb
font_01_sfnt_off0000eb60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB60 10648 bytes
SHA-256: 8dc484cd828476681a767be89cdc697e4d1dffe915e060437fbfbfc7ed03e2ec
font_02_sfnt_off00010fcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FCF 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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