Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0ce4f53b5f79fee…

MALICIOUS

PDF

79.9 KB Created: 2021-03-28 01:43:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 31a66a3d18e4738c208331bce9aff1ac SHA-1: 3a202e0968eab60621e11c39c4ede285690424b7 SHA-256: f0ce4f53b5f79fee0d4a59b96f34238fbc738c4287a7df3fd60b32626ee72313
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is also listed as an IOC. The ML classifier and ClamAV detection strongly indicate maliciousness. The document body, though heavily obfuscated, contains keywords related to game downloads, suggesting a lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://ponafet.ru/wix?keyword=warhammer+freeblade+apk+obb
    • http://sunesasewi.iblogger.org/watadesoxesulelalifidin.pdf
    • http://onlyforyou.space/milomiwetomas26am7.pdf
    • https://notebatamigoxaw.weebly.com/uploads/1/3/4/7/134715817/lavufe.pdf
    • http://zobowuni.22web.org/blood_relation_shortcut_tricks.pdf
    • http://songkfrk.site/gilan0vtey.pdf
    • https://zomurudol.weebly.com/uploads/1/3/4/4/134492975/vusoxop-vosafi.pdf
    • http://love-your-lips.online/96944423236wh3ck.pdf
    • http://ru-payment.casa/koxono4o7mw.pdf
    • http://rovanenafet.getenjoyment.net/apnea_del_sueo_en_adultos_mayores.pdf
    • https://lubawefajisewo.weebly.com/uploads/1/3/4/4/134443910/nijoxi.pdf
    • http://lightsex.ru/60584822811fqf9z.pdf
    • http://mutujejeturuduf.medianewsonline.com/1101548457.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/sefepugolupalax/golden_guide_hallucinogenic_plants.pdf
    • https://s3.amazonaws.com/tamovagag/futunufi.pdf
    • https://b56e00ce-d729-42e9-814b-b9a4b194f5ba.filesusr.com/ugd/f6f93f_12bc8db517714b30bdbdf126b09622bb.pdf?index=true
    • http://fedonefekipide.myartsonline.com/how_to_add_teeth_to_partial_denture.pdf
    • https://712e085e-8422-4094-ae2e-709d430f1fc9.filesusr.com/ugd/bf8edb_3194eac9a46941269e98ba2b2782f7e8.pdf?index=true
    • https://a7da3e60-63c8-46c1-a846-eab7df628ed2.filesusr.com/ugd/bba345_3038c43008dc4cb7bc300ccdf29382c8.pdf?index=true
    • https://s3.amazonaws.com/fizaxo/mamosupimewu.pdf
    • http://guzumirofega.epizy.com/cours_sur_le_carburateur.pdf
    • http://sipomivizipe.epizy.com/child_short_stories_in_urdu.pdf
    • http://fazatela.myartsonline.com/ashrae_fundamentals_handbook_2020_free.pdf
    • http://xegiwofune.rf.gd/16261695050.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_off0000ecaa.bin
df4aaac24e9cb9449b9007075fbb5710a354e759a6681b940746cdf80e65839d
pdf-font-stream PDF embedded font (sfnt) at offset 0xECAA 5320 bytes
font_01_sfnt_off0000fea0.bin
17c5d201ae9719eacc426bda086ab6aab47f957de12fb8542c2782b9fd7e0374
pdf-font-stream PDF embedded font (sfnt) at offset 0xFEA0 21324 bytes