Malicious PDF — malware analysis report

Static analysis result for SHA-256 05733389dd093d11…

MALICIOUS

PDF

63.8 KB Created: 2021-02-13 09:13:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d372f92164272bb2616ac7acc6cc9453 SHA-1: e781e4a69cb4b56ff8109f36b7d821371e4ea039 SHA-256: 05733389dd093d115326baec5f0ed372d9ab31ca04cc8f1e87f01d2d2f769eed
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains an embedded URI pointing to a suspicious domain, which is likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains metadata that includes the suspicious URL, further indicating a phishing attempt.

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://leonvi.ru/aws?utm_term=blue+devils+dci+2019+performance PDF link annotation
    • http://mishabelle.ru/837154151945h4q6.pdfIn PDF document text
    • https://cdn.sqhk.co/nenuguvan/hcgesja/23822542534.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448984/normal_5ffdfae6a188a.pdfIn PDF document text
    • https://cdn.sqhk.co/girewobo/TvW61if/are_candy_fruit_slices_gluten_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415304/normal_5fd8b86ccd4b5.pdfIn PDF document text
    • http://afracheat7.xyz/jevuforox1jc1p.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404124/normal_60265c652e8e1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366362/normal_5febc7bce1432.pdfIn PDF document text
    • https://cdn.sqhk.co/nedivixozu/hhjamja/pimerepukazow.pdfIn PDF document text
    • https://cdn.sqhk.co/rawerusiwala/Yhjhagd/stampede_reservoir_fishing_regulations.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/godewumazek/archive._org_games.pdfIn PDF document text
    • http://difedomuki.epizy.com/16524577984.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxepiduded/round_border_button_in_android.pdfIn PDF document text
    • https://s3.amazonaws.com/navoburarovada/sugem.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/xafekudebuli.pdfIn PDF document text
    • http://rebopugosive.rf.gd/83978394714.pdfIn PDF document text
    • http://moliposapivar.epizy.com/17310827049.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_off0000baee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAEE 5892 bytes
SHA-256: ea08bc3cf8a34d52927e319b4cdcdf9641b7554d9d907724b887c12b42a59dd1
font_01_sfnt_off0000ceef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEEF 10240 bytes
SHA-256: 5a9c775bb962d7be31fb81fe21a714c2cc9ea5eed474e7d18179c385bf203d81

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