Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac9529339ed5f51e…

MALICIOUS

PDF

102.6 KB Created: 2021-06-30 09:23:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: fcd302af1d3715b45ad5b48d1fdf8965 SHA-1: 3e075047dc28af9c23e4e226515be3c3da1a9b4d SHA-256: ac9529339ed5f51eddf51b87ca31c30b6249b092a6440d1749fa50ea865e0b03
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body contains multiple embedded URLs that likely lead to the download of further malicious content, such as other PDFs. The presence of these URLs suggests a phishing or social engineering attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9910

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://goodluckfishing.com/ckfinder/userfiles/files/66748353037.pdf
    • http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b4f5e037ae5---97146417827.pdf
    • https://orkhaconstruction.com/wp-content/plugins/super-forms/uploads/php/files/9pa3c13515grs7tvoc4smoosgc/19441094912.pdf
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081662cebf3a---12965265441.pdf
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16072b4b5b7439---986582875.pdf
    • http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1b93c6e8ee---39779680820.pdf
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a4770eac4e9---nakobopitaduberiloza.pdf
    • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160afbf6429403---35863525679.pdf
    • http://skup-laptopow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160718c011b675---76971191394.pdf
    • https://bushregenerators.biz/userfiles/files/suvajutes.pdf
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c9545949a08---jelawisu.pdf
    • http://bidmitt.com/img/files/file/99876861214.pdf
    • https://binarbaid.com/public_html/userfiles/file/92796365794.pdf
    • http://www.adatechotomasyon.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609f797464bc2---50144252436.pdf
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160864e3d36f73---83771119609.pdf
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a43d1a90554---68688207041.pdf
    • http://ebslang.net/_UploadFile/Images/file/70164566450.pdf
    • https://pankalconstructora.com/wp-content/plugins/formcraft/file-upload/server/content/files/160851092edea5---97510682090.pdf
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/3c35e02b32a166dcfaecc31bd0ab1cd8/47897457476.pdf
    • https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c39a2039d73---xatibibavuz.pdf
    • http://goref.ru/files/file/fuzewugovomatuzurosurute.pdf
    • http://expresskaliski.info/file/57088020794.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=geometry+and+vector+calculus
    • 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_off00011099.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11099 16792 bytes
font_01_sfnt_off000128b0.bin
717efcb6bad39a8c826297109682a1398797708bc49b66cec330cbc0fe497960		 pdf-font-stream PDF embedded font (sfnt) at offset 0x128B0 10756 bytes
font_02_sfnt_off00014183.bin
591579efece13571add28e1300438fd79c23ecdbf948986006aae515650976bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14183 16300 bytes
font_03_sfnt_off000157a4.bin
33cdc39618e25149603c9fe0cfe0b3fa24558cd3987469ca62cf865526ae4641		 pdf-font-stream PDF embedded font (sfnt) at offset 0x157A4 20288 bytes

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