Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8fe83c699099283…

MALICIOUS

PDF

81.2 KB Created: 2021-03-16 18:26:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 418564951e7354c96cc86f8c94b09005 SHA-1: b3c4405db3c5fee3186567d0656733e64a1a1a10 SHA-256: d8fe83c6990992830ee4b7e32643add53d43658ecf399b5262edf316f142b07b
96 Risk Score

Malware Insights

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

The file is a PDF that contains embedded URLs, one of which is presented as a search result for a book. The ML classifier and ClamAV detection strongly indicate maliciousness. The presence of external URIs suggests the document is designed to redirect the user to a malicious site or download further content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://bologen.ru/wix?keyword=hell%2527s+vengeance+book+1+pdf
    • http://worameruvejaka.mywebcommunity.org/tevizuj.pdf
    • https://cdn-cms.f-static.net/uploads/4368475/normal_603777003f85c.pdf
    • http://gatofupimekow.mywebcommunity.org/60297714164.pdf
    • http://larebalin.mypressonline.com/can_i_get_a_covid_test_in_georgia.pdf
    • https://static.s123-cdn-static.com/uploads/4468553/normal_5fdf517e2b387.pdf
    • https://cdn-cms.f-static.net/uploads/4427086/normal_60293f4fcee16.pdf
    • http://xejevojesinil.22web.org/neuropsychological_assessment_battery.pdf
    • http://jisetatiloro.scienceontheweb.net/husqvarna_240_carburetor_replacement.pdf
    • https://cdn-cms.f-static.net/uploads/4410976/normal_60395b798b3a2.pdf
    • http://budokudepa.scienceontheweb.net/37664436701.pdf
    • https://static.s123-cdn-static.com/uploads/4376382/normal_5ff0696648999.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zepuwiz.atwebpages.com/list_of_extreme_adjectives.pdf
    • https://s3.amazonaws.com/waduzirader/mirelumenidobu.pdf
    • https://s3.amazonaws.com/gajabedafot/fosovaxapoko.pdf
    • https://s3.amazonaws.com/gapivegek/savaxoxijagaw.pdf
    • http://rinimodosejowuf.myartsonline.com/53827976554.pdf
    • http://gukasitaxe.epizy.com/bhojpuri_dj_remix_mp4.pdf
    • https://s3.amazonaws.com/wanalovum/keto_meal_guide.pdf
    • https://s3.amazonaws.com/mudurixo/20671645135.pdf
    • https://s3.amazonaws.com/nafibanefexex/lunapekezoz.pdf
    • http://juwoluvu.epizy.com/how_to_teach_grammar_to_beginners.pdf
    • https://s3.amazonaws.com/kozewuposoridil/91_freeway_traffic_report_california.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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe2e.bin
35d43c562a54a10972fcc8150495c46de9a30620a6952d3bbd897bfceb028c45
pdf-font-stream PDF embedded font (sfnt) at offset 0xFE2E 5536 bytes
font_01_sfnt_off0001112d.bin
2c27ad17427b09cc2489a7b95f50b7fd668014b43df5d3f07f7d12904b8bb07e
pdf-font-stream PDF embedded font (sfnt) at offset 0x1112D 11268 bytes