Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae53c7030d60d0c1…

MALICIOUS

PDF

87.0 KB Created: 2021-03-10 19:32:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: fc2347093e40c151fe96516af54ec3b6 SHA-1: 956a83206be8d5891e006ba482e5bfb08b8d9f48 SHA-256: ae53c7030d60d0c1cf67bbf014448ecd2483b2444edb58b8d786ee5bb3cf1863
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 directs users to a suspicious domain, likely to host further malicious content or phishing pages. The document body, though heavily obfuscated, appears to be a lure related to 'structure of the constitution', intended to trick users into clicking the embedded link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jacksth.ru/wix?keyword=structure+of+the+constitution PDF link annotation
    • http://jigabidom.22web.org/14263996030.pdfIn PDF document text
    • http://rakajipof.22web.org/bypass_proxy_android_mobile.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gixiluvigatekij.atwebpages.com/11058738312.pdfIn PDF document text
    • http://zasasopatadinu.epizy.com/how_do_i_reset_my_weight_watchers_points_plus_calculator.pdfIn PDF document text
    • http://zapizuw.rf.gd/emulator_android_terbaik_untuk_pc_2018.pdfIn PDF document text
    • http://veduredetud.epizy.com/tosuvakenafirugajeduwiruv.pdfIn PDF document text
    • http://pobediwawe.epizy.com/radirekinonebalosez.pdfIn PDF document text
    • http://xigufogadenake.epizy.com/60_years_of_challenge_book.pdfIn PDF document text
    • http://velumosak.epizy.com/muvogexatave.pdfIn PDF document text
    • http://gototura.myartsonline.com/zazetokejowedikej.pdfIn PDF document text
    • http://zotubune.myartsonline.com/what_are_the_ages_of_kohlbergs_stages_of_moral_development.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/17900838981.pdfIn PDF document text
    • https://s3.amazonaws.com/woberiz/59427683848.pdfIn PDF document text
    • https://s3.amazonaws.com/nefomojuwet/bryant_furnace_model_numbers.pdfIn PDF document text
    • http://zovawawopo.rf.gd/ridososirovogugogeju.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/muvosedoxizagag.pdfIn PDF document text
    • http://lejapanuvijul.rf.gd/binowu.pdfIn PDF document text
    • http://rewakagofeloze.rf.gd/60658447959.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/how_to_build_a_life_coaching_practice.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/34343298782.pdfIn PDF document text
    • https://s3.amazonaws.com/liwara/street_fighter_4_champion_mod_apk.pdfIn PDF document text
    • http://feferabi.atwebpages.com/psychological_assessment_specialists_pllc_pocatello_id.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011ad1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AD1 4828 bytes
SHA-256: 1a6536484cc802906381da5ab8e46365352f0e1d2a9614420674f0fc1e738769
font_01_sfnt_off00012b40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B40 10508 bytes
SHA-256: 655338d9bb2af18897cf647f8f1e35152820da9476989410508e3228576ec26b

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