Malicious PDF — malware analysis report

Static analysis result for SHA-256 cab99a065d8aa867…

MALICIOUS

PDF

88.3 KB Created: 2021-06-27 14:33:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f6c6ab5b54dc093a39c7f4e0e98e3537 SHA-1: 04a8949e4f0e8211c2bc7395d7f8dbd89e251c45 SHA-256: cab99a065d8aa867f0b43102f58ced7f1fa4ec7a7411ee62ae1e494ffabdc9eb
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as a malicious PDF by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous embedded URLs, many of which point to other PDF files hosted on suspicious domains, suggesting a download or redirection chain. The presence of an external URI heuristic further supports the attempt to lead the user to external content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

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://skoleniridicu-online.eu/ckfinder/userfiles/files/dogodojipu.pdf
    • https://teenvolunteer.org/wp-content/plugins/super-forms/uploads/php/files/2fca61c951725d2ecd8cdb09277a6da5/masesixamosovadijewakal.pdf
    • http://driver-jazda.pl/upload/file/45641382488.pdf
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/mvipncrvbg08esv36pebc2irs3/vosunuvasomus.pdf
    • https://nikosdimos.gr/userfiles/file/33668925959.pdf
    • http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16082b9163b1bd---rizosizagujofawajozef.pdf
    • https://yssnewlessons.org/UserFilesTwo/file/durojo.pdf
    • https://coil.hk/upload/files/61968793417.pdf
    • https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609979438e5ff---23842142738.pdf
    • https://urbanplace.me/wp-content/plugins/super-forms/uploads/php/files/d1a3c5177cf813e6ba3016a521ad80b9/bakirewivakuremo.pdf
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b508e476e38---41011763965.pdf
    • http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085685c61969---34571405003.pdf
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab69df76691---47040445003.pdf
    • http://surtek.biz/image/files/20150119_013044.pdf
    • https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/0a3f4e0c586850ed0ae496491b6cdfe0/tadebawuvoraxanuvajab.pdf
    • https://xuantruongtech.com/images/ckeditor/files/sogegafuzipedaxiwelomeviw.pdf
    • https://funkydrop.shop/wp-content/plugins/super-forms/uploads/php/files/b385b25d8cfa134ab1087889db424b89/70548843198.pdf
    • http://www.kickcommerce.com/userfiles/file/jexajukesarafanefo.pdf
    • http://www.ausafrica.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a05e4b01b55---16559113788.pdf
    • http://shinies.ru/img/lib/file/98311186799.pdf
    • https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608100996a066---20367429841.pdf
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/16071ba69f0194---bakedamujifiguzetuxo.pdf
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/g0up14p5mok7fcqv3rrp78td61/goxep.pdf
    • https://ascinfratech.com/clientprojects/trading/file/38993454612.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=dowells+cable+lugs+catalogue+pdf
    • 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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dcba.bin
9d5144547e0b729630886a3ad3ce48e7da84b0115899dd9c2390406af6f0fecd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDCBA 16092 bytes
font_01_sfnt_off0000f1ff.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1FF 16792 bytes
font_02_sfnt_off00010a16.bin
6ea0814c3db2435158eee15f2807d136df60f141779f131e3b619cd9ace0de70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A16 10824 bytes
font_03_sfnt_off000122e2.bin
cb717bdb3d5a8c7e2fdbf3812beb9356905cbe2109903bdccbd9864da7dbef1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x122E2 17884 bytes

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