Malicious PDF — malware analysis report

Static analysis result for SHA-256 15ce94be13338bcb…

MALICIOUS

PDF

83.2 KB Created: 2021-04-02 01:02:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: cf0e23198686142079dcae75520f3b49 SHA-1: eac2534fdc84ad0b01c0309ba67a7f3de0d0d289 SHA-256: 15ce94be13338bcb1495d645238faad583e7dbd202e0225da061c644dacdc2bd
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating the presence of external URIs. The primary malicious URL, https://druttle.ru/strik?utm_term=the+road+to+el+dorado+cast, is embedded within the document, suggesting a phishing or malware delivery attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious intent, likely to redirect the user to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/strik?utm_term=the+road+to+el+dorado+cast PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4484612/normal_606618e8d7036.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459780/normal_5feeaa97c9830.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385028/normal_5fce05b3caca6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405197/normal_600a9994d19c5.pdfIn PDF document text
    • http://confirmationhelpcenter.com/how_to_insert_the_bobbin_on_a_kenmore_sewing_machinebm58f.pdfIn PDF document text
    • http://dfds.in/air_force_1_pixel_ghost_aquaviqti.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385876/normal_5fedb8d913f46.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388177/normal_6042ec134333d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446398/normal_5fd7b6ffe3356.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406771/normal_6000f3e5c883b.pdfIn PDF document text
    • https://cdn.sqhk.co/zujumatatub/JQgdegc/power_audio_pro_music_player_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/vefoveted/idIKjj6/pidomadupivesulipafe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455673/normal_604680c8e730b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413118/normal_604fd9ea2dec6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490735/normal_600c8f542d5dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413983/normal_600b8d31ac70c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443337/normal_6056a730cb00e.pdfIn PDF document text
    • https://cdn.sqhk.co/dofofigeniso/ePB0OhD/53573204749.pdfIn PDF document text
    • https://cdn.sqhk.co/tinolefowi/icihdhk/nifurimujodaxarubomon.pdfIn PDF document text
    • http://hurleyshamburgers.com/avengement_full_movie_480pcs21y.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366406/normal_5fca7b88cdb5d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bc80ccc-86d0-4dfe-a16f-2834bc4b858c/jufitovolejogolawovefu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9044d44-89d8-4413-b070-26d1707932ad/violence_over_the_land_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a464e308-ed0b-44e6-b791-a182173cb1cb/wesiniboletemofuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93fda7d9-6d2e-430a-b305-747d7f340336/gakujezazodafelabin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b77c17d-9144-426e-a800-91e13045dd01/spy_training_school_uk.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_off000108ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108AC 4976 bytes
SHA-256: aa37b5f67f61b0c4ddc65dd9e8a8ff0ed0f875a391fc8a62ecb6488f7224dcff
font_01_sfnt_off00011986.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11986 11244 bytes
SHA-256: 21b727dcd1a65ea3475139c6f9f6e08494d00ba3aca6dba6715c8839e013341b

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