Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce238ac76f5041a6…

MALICIOUS

PDF

78.1 KB Created: 2021-03-18 08:09:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d0f3a3eff5aa42748165de883d4668d5 SHA-1: 7c3c1fb8e0eeb6615c0b72ca08bcab2fe9acaaf3 SHA-256: ce238ac76f5041a6a1d4f7f470c7a19f855bdffbf29bd7c702f61fdae9536080
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains multiple embedded URLs, one of which is `https://dafemum.ru/wix?keyword=titan+quest+warden+leveling+guide`, suggesting a lure to a potentially malicious website. The document body is heavily obfuscated, but the presence of external URIs and the overall detection indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://dafemum.ru/wix?keyword=titan+quest+warden+leveling+guide
    • https://cdn.sqhk.co/vavetiset/rzidhhd/correlation_and_research_methods_review_worksheet_answers.pdf
    • https://cdn.sqhk.co/fenazijeguk/iigiVMw/jetawojukasokenoriko.pdf
    • https://cdn.sqhk.co/jabezoxujo/hd4QjYJ/recargar_a_cuba_con_rebtel.pdf
    • http://bigijawiv.scienceontheweb.net/55584419743.pdf
    • https://cdn.sqhk.co/jawuraxexije/hbC4Zie/kidudesewejikoxufile.pdf
    • https://static.s123-cdn-static.com/uploads/4379355/normal_5fe413aeb8023.pdf
    • https://cdn-cms.f-static.net/uploads/4418191/normal_602bf3eccb986.pdf
    • http://siondez.ru/westworld_season_3_episode_2_scriptrgc3s.pdf
    • https://cdn.sqhk.co/lakabarobuk/eifihlu/safalewedovulo.pdf
    • http://suxoxaxowigab.scienceontheweb.net/pafawasujubatawixugofadok.pdf
    • https://cdn.sqhk.co/jaxubefe/RShghh2/nhl_scores_and_standings_2020.pdf
    • https://cdn.sqhk.co/dijowasedop/jfBOgje/shooters_world_tactical_rifle_powder_load_data_223.pdf
    • https://cdn.sqhk.co/setawigiz/gDifohg/bacon_pancakes_new_york.pdf
    • http://istra-backwater.ru/agilent_multimeter_34401a_priceh9qsw.pdf
    • https://cdn.sqhk.co/xedufoga/gd4hhid/gugiwepiloxad.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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_off0000f0e4.bin
d1e2b246193323ec7e3ac7069c508e3bf12a4bb8e83824bd81c90b7350c269be		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E4 5220 bytes
font_01_sfnt_off000102c4.bin
50c8f4a8dc339affca3bddfed276331e7e4b74cce21a5a07187629952b310325		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102C4 12112 bytes

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