Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1c7653e7ae82433…

MALICIOUS

PDF

100.2 KB Created: 2021-03-16 17:08:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d92b16b08877aca2a1582a05758c1dd0 SHA-1: 7f8abcf99064ea6662f15d97034d988bca0982b4 SHA-256: f1c7653e7ae82433522ea774934ceb55573d45b04ef6cf6871d68d10f9bc6570
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs indicate an attempt to redirect the user to a malicious site, likely for credential harvesting or further payload delivery.

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://resalured.ru/award?keyword=metodo+del+materialismo+dialectico+pdf
    • http://lanejaselisipu.22web.org/cours_anatomie_de_l_oeil.pdf
    • https://cdn.sqhk.co/lagidexetin/8iamUT6/sotatagolawa.pdf
    • https://cdn.sqhk.co/dekavaka/igm7ijL/sky_force_anniversary_review_switch.pdf
    • https://cdn.sqhk.co/kixikeli/gihH3ih/novipi.pdf
    • https://cdn.sqhk.co/nepofigiper/bjeRL7T/safogowetijorekese.pdf
    • http://texulateniz.iblogger.org/36536196688.pdf
    • https://cdn.sqhk.co/fasotaluvose/hijgiih/simple_chocolate_cupcake_recipe_food_network.pdf
    • http://bapaweki.22web.org/how_do_i_become_more_flexible_at_work.pdf
    • http://nigamenivikuki.iblogger.org/how_to_convert_8mm_tapes_to_dvd_without_camcorder.pdf
    • https://cdn.sqhk.co/fumodolanes/giPjizB/burabatetiligebubopad.pdf
    • https://cdn.sqhk.co/dagozuwemep/OCieoXX/one_piece_treasure_cruise_japanese_wiki.pdf
    • http://notalebapol.iblogger.org/cartesian_plane_worksheets.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://wotimadugol.epizy.com/briggs_and_stratton_1150_snowblower_manual.pdf
    • https://s3.amazonaws.com/fajujiju/24173140760.pdf
    • http://sewexojin.rf.gd/barrett_s_esophagus_guidelines_2015.pdf
    • http://vabizofolimise.epizy.com/bejirebanonaze.pdf
    • http://nadusapawamuj.epizy.com/best_baofeng_uv-5r_antenna_upgrade.pdf
    • https://s3.amazonaws.com/xovajukoxin/0._225_fraction_form.pdf
    • http://gamiwalulawevo.epizy.com/91712645477.pdf
    • http://bugifub.epizy.com/rugumovabe.pdf
    • http://lebiwubeso.rf.gd/anganwadi_vacancy_in_delhi_form.pdf
    • https://s3.amazonaws.com/fizufapu/tasugogibo.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_off00014907.bin
12f6790f9c0c463c20eb4b412cabd38750ed81da13baad0f260978042e00b32b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14907 5304 bytes
font_01_sfnt_off00015b00.bin
aec170fe04693d04854461dc94f970db4b0c0fb71f25d3586ff835782f1f3284		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15B00 11848 bytes

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