Malicious PDF — malware analysis report

Static analysis result for SHA-256 5da3c256ab33778b…

MALICIOUS

PDF

88.3 KB Created: 2021-03-07 08:38:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d94e85fd2622aee9c52fb148ba7ab4c7 SHA-1: 7e055484df7d5140003921a3bb28febea5609005 SHA-256: 5da3c256ab33778b42c5bbc42ac1d7615b1d50f61445ffd1739e8b8ab91ebe2f
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 embedded URIs that point to external websites, likely for phishing or malware distribution. The presence of these external links suggests an attempt to trick the user into visiting a malicious site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://lozipotod.ru/wix?keyword=making+cladograms+background+and+procedures+answer+key
    • http://sekelenogake.getenjoyment.net/brother_hl_2270dw_wireless_setup.pdf
    • http://wafejefasa.iblogger.org/xowukazu.pdf
    • https://static.s123-cdn-static.com/uploads/4445119/normal_5ff1223b05a05.pdf
    • https://cdn-cms.f-static.net/uploads/4387241/normal_6011841d956df.pdf
    • http://jerimujolegem.medianewsonline.com/zekafegurimugiwudi.pdf
    • http://doruguduku.iblogger.org/lajilamezomazigokulod.pdf
    • http://tenopokas.22web.org/59393644263.pdf
    • http://piwulag.sportsontheweb.net/best_movies_like_the_devil_wears_prada.pdf
    • http://mexuloxuxinona.iblogger.org/futetazeturilatukidokif.pdf
    • http://boribonabone.mypressonline.com/ukulele_barre_chord_chart.pdf
    • http://jodopafipunew.22web.org/bl2_effervescent_guide.pdf
    • https://cdn-cms.f-static.net/uploads/4497095/normal_60171e423ad91.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://nevefilin.rf.gd/apc_back-ups_xs_1300_not_charging.pdf
    • https://uploads.strikinglycdn.com/files/7e34f5ee-b1d7-4298-89ea-4cdadba51f6c/nixedanobifavema.pdf
    • https://uploads.strikinglycdn.com/files/4cfd9275-4fbd-429b-a2ee-d8a9a7fd6040/finite_element_analysis_in_geotechnical_engineering_application.pdf
    • http://meresig.epizy.com/chevy_malibu_2017_lt_manual.pdf
    • http://xolevusafo.myartsonline.com/how_to_learn_arabic_free_app.pdf
    • https://uploads.strikinglycdn.com/files/5b005532-c7f1-4d87-bfa2-faa839e132a9/31753368386.pdf
    • http://nirufexu.rf.gd/namelegamasexazaj.pdf
    • http://xodubepegiluli.rf.gd/93773568622.pdf
    • https://uploads.strikinglycdn.com/files/0a17c264-a7ff-470d-8e1e-dfe9183a2036/john_deere_345_mower_blades.pdf
    • https://uploads.strikinglycdn.com/files/6f4342f7-e4c5-4747-8b37-dc4180ef7088/john_calvin_institutes_of_the_christian_religion_translated_by_henry_beveridge.pdf
    • http://sumorililuduj.epizy.com/23074994080.pdf
    • http://gemunedipu.rf.gd/29293625221.pdf
    • http://viminug.epizy.com/62502173630.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_off00011b02.bin
eac47b4443d7c923176ec809f484eddff1c830fce2ad3ed293b63240b74eb19a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11B02 5796 bytes
font_01_sfnt_off00012ecc.bin
2a4874d98fbd0e4f9076d5158c70652849ca31ce37c70afb394e531b21f88711		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12ECC 10760 bytes

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