Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ada214e115bb42b…

MALICIOUS

PDF

71.3 KB Created: 2021-05-23 19:47:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3bbd9047ef95125826a27ae89e8da1ec SHA-1: 96bc23516070d750d64dd667b79e208db7c0cca4 SHA-256: 9ada214e115bb42b662af92a5238e5c44ba9f73d4b798fcacb3331512296d962
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document body, though partially obfuscated, suggests a lure related to art certificates, likely to trick users into clicking embedded links. Several unknown reputation URLs were extracted, which are likely part of the malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 http://w-f-l.de/user_img/file/vivavedemotobaralepop.pdf
    • https://www.oneirishrover.com/wp-content/plugins/super-forms/uploads/php/files/78ec59b06d0ea95e227dc5553c17487a/28323009786.pdf
    • https://felix-schulze.biz/wp-content/plugins/super-forms/uploads/php/files/abu9gfpnkcobp2l7n4d7jma053/5858982384.pdf
    • https://burlingame.com/wysiwygfiles/file/nedizulefifomu.pdf
    • https://happycustomerservice.com/wp-content/plugins/super-forms/uploads/php/files/d2911e629a8528b29a4753179434fdf5/43757219831.pdf
    • https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/dfeae52d92a83b0e66b84af771849ffa/botufamevinaxisusotux.pdf
    • http://simonide.org/userfiles/file/81603333775.pdf
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/160749918f4107---dedadiwukupalajenowewedip.pdf
    • https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607ddfba29e19---datapofeloxowosoba.pdf
    • http://ankurgroups.com/userfiles/file/vapenurigagorune.pdf
    • http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608680baa9dab---31445762085.pdf
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fe0d8d9766---tamalo.pdf
    • http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082ecea1b1e7---savefoxawajakenabikefo.pdf
    • http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ec6fa29185---21251910354.pdf
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/71b1919bc724cd36fed1b87207ddae2c/zokuwisavoguvubobuziginer.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=how+to+create+a+certificate+of+authenticity+for+art
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dcdf.bin
5f2db166b68883efdae9bdfca9823aad2367844224bb7242edd68547096709b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDCDF 4912 bytes
font_01_sfnt_off0000eda8.bin
377abc894d3bba606d7a8943f5aaba82dc59edab0a056819804173eb2be6073a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA8 10288 bytes

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