Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0bc5711cb09ebab…

MALICIOUS

PDF

74.6 KB Created: 2021-03-17 00:14:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cb1014161fa34e060f61b3934701e285 SHA-1: abc496b6aef02805c436ea61f26f821b723f9f8b SHA-256: d0bc5711cb09ebab2bb9936b9c619124446cd2afac528ff3ab52e0f2069bb25e
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that, when visited, likely leads to further malicious content or exploits. The document body, though heavily obfuscated, contains text related to search queries, suggesting a phishing or redirection attempt.

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://resalured.ru/wix?keyword=cpm+geometry+chapter+11+answers
    • https://cdn-cms.f-static.net/uploads/4380707/normal_5fd62518e5bcf.pdf
    • https://cdn.sqhk.co/zarepowake/hCuEjan/jabirinirupozexi.pdf
    • https://cdn.sqhk.co/sawitofi/7jgihii/cute_gif_stickers_on_snapchat.pdf
    • https://cdn.sqhk.co/vigesiji/fhcsxZx/risk_analysis_methods_journal.pdf
    • http://tofotibuwul.sportsontheweb.net/dodixog.pdf
    • https://cdn-cms.f-static.net/uploads/4402478/normal_600cf0ee23949.pdf
    • https://cdn.sqhk.co/nadipozow/mjigePy/cute_monster_battle_arena.pdf
    • http://sipataj.sportsontheweb.net/20935836324.pdf
    • https://cdn-cms.f-static.net/uploads/4481166/normal_6043371c34f8c.pdf
    • http://mafejaruvoje.sportsontheweb.net/parliamentary_and_presidential_form_of_government.pdf
    • http://lawusuzad.iblogger.org/birthday_banner_background_free.pdf
    • https://cdn-cms.f-static.net/uploads/4446017/normal_602e1d0fb64e4.pdf
    • http://momarivido.mypressonline.com/zobafuxen.pdf
    • https://static.s123-cdn-static.com/uploads/4365570/normal_5fee6fbe2767a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://megigezorozo.atwebpages.com/boolean_theorems.pdf
    • http://sivojosifa.epizy.com/abaqus_theory_guide_6._14.pdf
    • http://memujagitukeza.epizy.com/65275270037.pdf
    • http://widepidaba.atwebpages.com/gatevik.pdf
    • http://zevusup.atwebpages.com/bibliography_worksheet.pdf
    • http://zovitox.epizy.com/summary_of_the_story_one_of_these_days_by_gabriel_garcia_marquez.pdf
    • http://fadudenomo.onlinewebshop.net/8548743753.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_off0000e740.bin
45d80e659e8cadad25664d03ffd474fd94dfc80e97312da606ea6282febc415a
pdf-font-stream PDF embedded font (sfnt) at offset 0xE740 5468 bytes
font_01_sfnt_off0000f9cd.bin
8c1d701272c260e0b4faf95684f9148d0ecee35f6afc13c6e9b6a3ea659a663b
pdf-font-stream PDF embedded font (sfnt) at offset 0xF9CD 10380 bytes