Malicious PDF — malware analysis report

Static analysis result for SHA-256 5be19bf1c48381fc…

MALICIOUS

PDF

79.5 KB Created: 2021-03-19 13:36:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5269d13838cecc8c7643dbe7b9427068 SHA-1: 6749d2304d31b3c4fa8f7d1f6a4e78a05e6eb2db SHA-256: 5be19bf1c48381fcd58e86a6b3be1f3d2d2843f8f0e67659551744a2a6a4bc78
104 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains embedded URLs, one of which is associated with a download lure, suggesting an attempt to trick the user into downloading a secondary payload. The presence of multiple suspicious URLs further supports this phishing and malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://gimoguvi.ru/123?utm_term=agent+vinod+full+movie++mp4
    • http://wiinorama.website/desvelar_en_inglesejoao.pdf
    • https://cdn.sqhk.co/livatunozasu/68PPjgN/94335216452.pdf
    • http://zajiledafalam.getenjoyment.net/likunadejexanuzi.pdf
    • http://clubstore.pro/liferagosikyqm33.pdf
    • http://de-bewertung-id2842384.icu/volomivowowezatoxene4notv.pdf
    • http://terugate.mypressonline.com/vosonabu.pdf
    • http://lighterusb24.site/riboruritadutelibufim67sj.pdf
    • https://cdn-cms.f-static.net/uploads/4380083/normal_6013925fa561b.pdf
    • http://boxoxele.22web.org/5425555610.pdf
    • https://cdn-cms.f-static.net/uploads/4446152/normal_601fcec1529e8.pdf
    • https://cdn.sqhk.co/javeduner/g26hjum/49137440002.pdf
    • http://gudelew.mywebcommunity.org/48306891784.pdf
    • http://genusadnlo.space/bowflex_treadclimber_tc3000880d3.pdf
    • http://tuderoba.getenjoyment.net/5973154868.pdf
    • https://cdn.sqhk.co/pobopuwubox/cgemjcL/vobobunifo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/ruzumeb/south_africa_political_history.pdf
    • https://s3.amazonaws.com/tutasujal/84965137213.pdf
    • https://s3.amazonaws.com/mefonevimimix/81955446947.pdf
    • https://s3.amazonaws.com/vatosolikijike/fapivusiligun.pdf
    • http://melamepapate.rf.gd/farmakologi_atropin_sulfat.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eafb.bin
90623c4721bddaf04a1c0c887d1a3700d4d1b91b129a3fb2b5c305f18a9ac7c1
pdf-font-stream PDF embedded font (sfnt) at offset 0xEAFB 4896 bytes
font_01_sfnt_off0000fba8.bin
d70f72149f73cfc4c00c888ae51a41891ea9197515716716d6035f5c839f64c9
pdf-font-stream PDF embedded font (sfnt) at offset 0xFBA8 10896 bytes
font_02_sfnt_off000120d4.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230
pdf-font-stream PDF embedded font (sfnt) at offset 0x120D4 4324 bytes