Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e107c6121fe308c…

MALICIOUS

PDF

73.6 KB Created: 2021-03-25 09:56:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 32c799a81be7b4bbcbe7fbe19edf23aa SHA-1: 121e9547a3f4dd78922de1be358ae2059d1d8b7f SHA-256: 8e107c6121fe308c07281f2521e2239c891180d529e8cfd2ae7d586c31ff2e1e
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 a strong indicator of malicious intent. The ML classifier and ClamAV detection further support this, flagging the file as malicious and phishing-related. The document body, though heavily obfuscated, suggests a lure related to 'Timeline of world war 1 france', likely intended to trick users into visiting the external URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://kuzutuzo.ru/strik?utm_term=timeline+of+world+war+1+france
    • http://kapovulup.mywebcommunity.org/difference_between_vedic_and_buddhist_system_of_education.pdf
    • http://jegajebisukagur.22web.org/61771274486.pdf
    • http://sevezor.scienceontheweb.net/66020871105.pdf
    • https://cdn-cms.f-static.net/uploads/4486367/normal_60552672daed1.pdf
    • https://vemisalisak.weebly.com/uploads/1/3/1/4/131437925/fefoxomisuzarug_furatojapogaz.pdf
    • http://baxutuji.22web.org/hp_laserjet_p1102w_service_manual.pdf
    • https://static.s123-cdn-static.com/uploads/4480898/normal_5fcd25759ecea.pdf
    • http://bejisosubonito.sportsontheweb.net/bryant_plus_80_filter_replacement_size.pdf
    • https://nekusudowup.weebly.com/uploads/1/3/5/3/135315851/fetifuzufak-werowibe.pdf
    • http://pegiwikepideke.iblogger.org/android_9_update_for_samsung_a7_2018.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xedemigu.atwebpages.com/what_bird_has_orange_feet.pdf
    • http://gewelokoroboru.rf.gd/sujepunufifezubuxagakelu.pdf
    • https://94db4134-5784-44c5-a63d-963e509970fa.filesusr.com/ugd/9c58c5_6b313bce933f4a7e9969e625c858e597.pdf?index=true
    • http://mivajodeki.epizy.com/55261070087.pdf
    • https://s3.amazonaws.com/satedafadusizo/65584836007.pdf
    • https://69a7f268-727d-4112-ba4f-a3538cc856be.filesusr.com/ugd/9a0d60_e4ee07b21dd5491d81b07fce9c7d3bb6.pdf?index=true
    • https://s3.amazonaws.com/ratixifo/double_negatives_worksheet_3.pdf
    • http://bivojeda.atwebpages.com/napaxedexusipume.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_off0000e52b.bin
35632071d0576fd128e46a53303b7b0ec8f6beb471e6da0bc4c84c0d21b2b6f1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE52B 5080 bytes
font_01_sfnt_off0000f675.bin
f6e2e2a23fbc1100044743741442311a33422387287772d8e9d9ef3344630b05
pdf-font-stream PDF embedded font (sfnt) at offset 0xF675 10504 bytes