Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c1e6894deb7e116…

MALICIOUS

PDF

77.0 KB Created: 2021-03-22 23:29:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 14f739c87a93696c2b1bc102bc050de8 SHA-1: d14953d7762c50a2b99f817f8fcbe85993a8c2d0 SHA-256: 8c1e6894deb7e1166291aa6378d590c5baab6c13bad56a74789e65de3fcb0e2b
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI that redirects to a URL designed to mimic a search result, likely as a lure for phishing. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to malicious content, potentially leading to further exploitation.

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://leonvi.ru/wix?keyword=curley%2527s+wife+of+mice+and+men-character
    • https://cdn.sqhk.co/lojibuwe/RpVhigj/laser_quest_montreal_quebec.pdf
    • http://wexixexebasober.22web.org/hc_05_bluetooth_module_arduino.pdf
    • https://cdn-cms.f-static.net/uploads/4417207/normal_603d04cb43d5e.pdf
    • http://gexifivavipi.iblogger.org/hansel_and_gretel_get_baked_movie_download.pdf
    • https://cdn-cms.f-static.net/uploads/4421210/normal_6046c28b7c947.pdf
    • https://cdn.sqhk.co/lukulobu/siepcjc/felajitone.pdf
    • https://cdn.sqhk.co/lulamekajasu/0harJgg/pewedezovaxeripexonuwoku.pdf
    • http://felorov.iblogger.org/95120270307.pdf
    • https://cdn-cms.f-static.net/uploads/4462982/normal_60392b43afe7a.pdf
    • http://vanorokadojigi.iblogger.org/11458688203.pdf
    • https://static.s123-cdn-static.com/uploads/4492586/normal_5fe28a384d46f.pdf
    • https://cdn-cms.f-static.net/uploads/4488570/normal_60547255155ae.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kuporalegumema.epizy.com/77474128525.pdf
    • http://muloluj.rf.gd/62520190612.pdf
    • https://1bf92926-22d0-44a1-94fb-b51843c41cd5.filesusr.com/ugd/762c1a_542b3ca88949420f859ad7936deaf5df.pdf?index=true
    • http://sakigekoxigukil.epizy.com/pronunciation_guide_for_biblical_names.pdf
    • http://jigiwema.epizy.com/short_term_career_aspirations_answers.pdf
    • https://9e77dbea-16d6-438e-9859-4a68c5388828.filesusr.com/ugd/3225da_270c1fe811784c5fa05046dbbb76bfa0.pdf?index=true
    • http://vodulisus.rf.gd/xaduwurujapiledizoledut.pdf
    • https://46fb9a51-9e16-4ad8-811e-2f7ed01702f7.filesusr.com/ugd/53363c_cfc685b748f849ea8bfc0461bc9e77bb.pdf?index=true
    • https://a43ab9c2-5efb-4cee-ac06-b782a0f5e207.filesusr.com/ugd/4826f5_8301ba60823e4c4ea4dd1c64ea48fc72.pdf?index=true
    • 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_off0000ee3f.bin
b96559b837d8705f748cf809a157ca518178c5b4d8f187d20d82c0180b051f66
pdf-font-stream PDF embedded font (sfnt) at offset 0xEE3F 5428 bytes
font_01_sfnt_off000100ab.bin
61ee3d86bd3221e4f576c3173ea10b881a39807de52e9da1a8c268d373993459
pdf-font-stream PDF embedded font (sfnt) at offset 0x100AB 10600 bytes