Malicious PDF — malware analysis report

Static analysis result for SHA-256 357ec63e5f790a65…

MALICIOUS

PDF

75.9 KB Created: 2021-04-01 17:53:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 07ab4bb1abe57c9b42c431167f721aa7 SHA-1: 2f383c73235c8ab5c5b7744d480984209bbb8d7d SHA-256: 357ec63e5f790a658d1ba4d59ff482ec0077ddf6c1ed7bbc5bc38df5ca7c70eb
96 Risk Score

Malware Insights

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

The PDF document was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though partially corrupted, suggests a lure related to the spread of Islam in West Africa, which is a common tactic for phishing documents.

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://jacksth.ru/strik?utm_term=why+did+islam+spread+so+quickly+in+west+africa
    • http://operationhomeplate.com/6737807451889c0o.pdf
    • http://outputqwvk.space/bukawusirixagegu3n3e8.pdf
    • https://static.s123-cdn-static.com/uploads/4387233/normal_5ff79bd9c2541.pdf
    • http://ludirobus.getenjoyment.net/nibuzizekazuxavaga.pdf
    • http://netekepipavosis.sportsontheweb.net/20259290588.pdf
    • https://cdn-cms.f-static.net/uploads/4455380/normal_5fdbc29ff3d64.pdf
    • http://bexixibeguben.sportsontheweb.net/vuvigenanuxuwe.pdf
    • http://gejokakop.mygamesonline.org/61889552538.pdf
    • https://cdn-cms.f-static.net/uploads/4393359/normal_602a3e9c0a0d5.pdf
    • http://rozel.ru/721819280046c1l3.pdf
    • http://suvonenexazu.mywebcommunity.org/ews_10_reservation_form_download.pdf
    • http://tatanip.medianewsonline.com/begitojevij.pdf
    • http://losinglotterynumbers.com/tejavofironijx0u7d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://203aa715-7352-46b1-b16b-5d0aeeaa27a2.filesusr.com/ugd/0582e0_7094822034a84d9d9262ad769e58e96c.pdf?index=true
    • https://s3.amazonaws.com/tumasun/32691358401.pdf
    • https://s3.amazonaws.com/tujeviwakirawu/zulesunurufilu.pdf
    • https://s3.amazonaws.com/bejikefowu/which_teeter_inversion_table_is_the_best.pdf
    • https://ad9e3d1f-bb22-46ca-892e-b6aa3325a756.filesusr.com/ugd/837d34_1ac4ce12d57f47f188aa8ea29ab6a741.pdf?index=true
    • http://kebenubes.onlinewebshop.net/gixukujesefowazoxusilo.pdf
    • https://s3.amazonaws.com/dovulavavo/bootstrap_3_templates_free.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_off0000e9f7.bin
d7b33b4c9da00c0be37c1bcae74fe97f1268d4117f3fb56cbc28198e0ab06611
pdf-font-stream PDF embedded font (sfnt) at offset 0xE9F7 5792 bytes
font_01_sfnt_off0000fda2.bin
0995c31aedd4a7262bc8d3e20380dfd66e8ecf0a11be664357e569150fd3f387
pdf-font-stream PDF embedded font (sfnt) at offset 0xFDA2 10852 bytes