Malicious PDF — malware analysis report

Static analysis result for SHA-256 699ac3409db036a2…

MALICIOUS

PDF

103.0 KB Created: 2021-05-13 17:01:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e8f266e75a27fec94ddd25fc0fd8fa8e SHA-1: 7f239ab57e6fb34384f0745a197835cd36b2d84f SHA-256: 699ac3409db036a2707d1e5cc21dd20ae43b338529f76dca63f15ad507123d00
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an external URI pointing to a suspicious domain, likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://oniceh.ru/uplcv?utm_term=guidelines+for+hyperparathyroidism
    • http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f7522d1e38---3555290593.pdf
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607e614463f30---wurugirogefoguroba.pdf
    • http://eltonltd.ru/sites/default/files/uploads/82557520211.pdf
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/16099ff6bb7e3b---dufesot.pdf
    • http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16072e373b2c65---fuxatefoxitimaxugu.pdf
    • https://allcreaturesinc.com/files/files/42471788821.pdf
    • http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16081b2c9cccc0---buretomumivutunuvuju.pdf
    • https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608ad7700a791---zijitopigunuv.pdf
    • http://www.ambredore.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075ac00167b9---ruzamowivalurikujeberudun.pdf
    • https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16098f337d3c87---97586934899.pdf
    • http://aarogyamedico.com/userfiles/file/47668394160.pdf
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608bc160d58a7---78330869916.pdf
    • http://lbs.ac.at/wp-content/plugins/super-forms/uploads/php/files/6irv3uvn6b46fkte4iffvo58v9/93131059036.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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_off000154c6.bin
654f1d0bc76258a5952d7e89030c40fcee2dd7eff36bc1c2e201a42db625396d
pdf-font-stream PDF embedded font (sfnt) at offset 0x154C6 5416 bytes
font_01_sfnt_off0001670f.bin
027a3085535bc192af6ea73308b4d001811648d1b235be2ab8a57536741496d7
pdf-font-stream PDF embedded font (sfnt) at offset 0x1670F 12140 bytes