Malicious PDF — malware analysis report

Static analysis result for SHA-256 b016e6168793cfb9…

MALICIOUS

PDF

128.5 KB Created: 2021-03-19 09:05:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b6378491f7a3bc0e75504592e7403a2 SHA-1: 90e386ca6e1ef7cf57775e2aedafaa3235c3d76b SHA-256: b016e6168793cfb90119504643c94df6c3b9f5f3e078bc4430d48d1a90bca0d7
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and 'Qt', suggesting it might be a crafted PDF designed to exploit vulnerabilities or deliver malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://maypoin.ru/wix?keyword=sonic+x+google+docs
    • https://xapenivivafozeb.weebly.com/uploads/1/3/1/3/131379266/839841.pdf
    • http://stroiline74.ru/sims_3_pets_for_mac_free_downloadchdtu.pdf
    • https://cdn.sqhk.co/savujegu/jdVhjje/96651143715.pdf
    • http://idem-peshkom.ru/77260936390f4hn0.pdf
    • https://cdn.sqhk.co/vofepubot/agdjfCy/gupuzeteviwitogafojulojo.pdf
    • http://interstart.online/tipos_de_sistemas_de_informacion_administrativaibwpb.pdf
    • http://fisareboveda.getenjoyment.net/levibinad.pdf
    • http://idealicait.website/vcruntime140._dll_freekm2ui.pdf
    • http://salonop.xyz/8881728897kxul1.pdf
    • https://sezebotari.weebly.com/uploads/1/3/1/6/131636698/xesalomasuvekorozipo.pdf
    • https://fefolidagemilo.weebly.com/uploads/1/3/1/4/131453124/2884232.pdf
    • http://tavafotuzefox.sportsontheweb.net/amcon_act.pdf
    • https://cdn.sqhk.co/vitozogog/0jhjbYn/netasezovekurodadolavinu.pdf
    • http://card2card.live/sopajavedomisasavewowndz5t.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/vonutavekip/glioblastoma_multiforme_meaning.pdf
    • https://s3.amazonaws.com/petuzutemixuvod/marikikan.pdf
    • https://s3.amazonaws.com/muvevanepen/roblox_shirt_template_galaxy.pdf
    • http://rojanesifilagu.myartsonline.com/business_intelligence_and_analytics_ramesh_sharda.pdf
    • https://s3.amazonaws.com/gixawetopoli/biniz.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_off0001a99c.bin
4b863541a866d19f7a6db7d11b1de3b2cfeea05aa5a92127ecafdb0a354e73a5
pdf-font-stream PDF embedded font (sfnt) at offset 0x1A99C 4972 bytes
font_01_sfnt_off0001baa1.bin
32adb412aa1eded713b208c5660fb0e06e44fc1099b7906cd0aace664360a9e3
pdf-font-stream PDF embedded font (sfnt) at offset 0x1BAA1 26480 bytes