Malicious PDF — malware analysis report

Static analysis result for SHA-256 933b7ca51abb2485…

MALICIOUS

PDF

78.5 KB Created: 2021-03-04 10:54:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: df24a85dd7cc55e9c78478c8220069ff SHA-1: ed8485aa8d9aa2ccafa5dcfbf1c2acd0dfd0d4be SHA-256: 933b7ca51abb248581b0abf6f3bf378dcebae966523ec6f30140b284b2897d5c
96 Risk Score

Malware Insights

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

The PDF document contains a lure related to stock brokers and embeds a URI pointing to a suspicious domain. ML classifiers and ClamAV detections strongly indicate malicious intent, likely for phishing or a scam. Although no scripts were explicitly extracted, the PDF_URI heuristic suggests the document is designed to redirect the user to a malicious external resource.

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://jumiwimov.ru/award?keyword=which+is+the+best+stock+brokers+in+india PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368732/normal_6011f16107f2a.pdfIn PDF document text
    • http://zumufufup.sportsontheweb.net/gaworamex.pdfIn PDF document text
    • http://kapovulup.mywebcommunity.org/16772742210.pdfIn PDF document text
    • http://bcpreactiva-enlinea.com/38551047852o5h17.pdfIn PDF document text
    • http://riwotivadejud.sportsontheweb.net/livejobuwoj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454046/normal_6007bba26cdc3.pdfIn PDF document text
    • http://thiswaytovogue.com/85033127061zkx56.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489607/normal_60257ee911298.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450141/normal_5fff29bcdb84f.pdfIn PDF document text
    • http://alcozerox.com/how_big_is_a_kenmore_coldspot_model_106cw2pi.pdfIn PDF document text
    • http://mon-cmso.best/gumoniex5bi.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/wibedubosateg/bhajan_lyrics_in_gujarati_language.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/76724785724.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/godspeed_frank_ocean_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/labitajaxatufib/ksbcl_web_report.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/survival_books.pdfIn PDF document text
    • http://rosajeku.myartsonline.com/99905024538.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_off0000e93e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE93E 5000 bytes
SHA-256: 8deefa603ef06291213b6012763c5dc78d9eb2fffa6f7b8b6822c0493f368b79
font_01_sfnt_off0000fa2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA2C 10508 bytes
SHA-256: e52e1a513a67395a81a3cc297fab6c2e40b65edc75371bc22b37d51b1521c032
font_02_sfnt_off00011e1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E1A 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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