Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf29477bbef4ca7e…

MALICIOUS

PDF

72.8 KB Created: 2021-03-23 07:24:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c2b45449fcc2bbcf536c74e854d3bc5 SHA-1: 5f814cdd1508185d993eec2fa67bc167bc1d84c2 SHA-256: cf29477bbef4ca7e71022ddc0eac3b2e6c5774d1dcddab2f05d28ac257177225
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to a domain that appears to be part of a phishing campaign, likely intended to trick users into downloading further malicious content. The document body, though heavily obfuscated, suggests a lure related to an 'award' or 'schedule'. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://dugedepap.ru/award?keyword=immunisation+schedule+uk+2020+pdf
    • http://boevoenlp.com/start_time_for_today_s_nascar_racemhpbt.pdf
    • http://vuvulusigi.scienceontheweb.net/carteirinha_de_vacinao_animal.pdf
    • http://niruteluw.22web.org/september_2020_printable_calendar.pdf
    • http://nakekizedexu.getenjoyment.net/poulan_pro_295_chainsaw_chain_size.pdf
    • http://tryse.xyz/75622954977e56zj.pdf
    • http://milanbeachs.space/jazogudowufuzeboriduzakilxvmpp.pdf
    • http://wobidujisix.iblogger.org/100_best_loved_poems_philip_smith.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://wudemexa.myartsonline.com/99012254022.pdf
    • https://uploads.strikinglycdn.com/files/cead5dcf-ef43-422e-9abb-0548338090a2/how_to_disable_a_viper_car_alarm.pdf
    • https://s3.amazonaws.com/jixeremipet/91115100119.pdf
    • https://uploads.strikinglycdn.com/files/06cef9de-f43e-4202-a4c3-9d8867ce03ab/tikanafifojegov.pdf
    • https://s3.amazonaws.com/vetamedisoz/nadav.pdf
    • http://novisagaxorom.epizy.com/java_netbeans_tutorial_for_beginners.pdf
    • https://uploads.strikinglycdn.com/files/9a323dc3-14c2-4afd-9019-9fab730fbef6/emotion_regulation_skills_dbt_handout.pdf
    • http://gelifadewew.rf.gd/35745829497.pdf
    • https://s3.amazonaws.com/ponivotigegepub/57686210046.pdf
    • http://logiweliziweje.onlinewebshop.net/arc_back_exercise.pdf
    • http://nibelid.epizy.com/varokososeni.pdf
    • https://uploads.strikinglycdn.com/files/de2985dd-4b6c-450a-8e76-f15e0006c94c/accu_chek_fastclix_lancets_cvs.pdf
    • http://rodedewezijore.atwebpages.com/microsoft_excel_projects_for_beginners.pdf
    • https://s3.amazonaws.com/zupenafud/cisco_firepower_asa_configuration_guide.pdf
    • http://xigavekokerir.epizy.com/nowawonabosa.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2f3.bin
cf3a5337e8aab684df8156bcfcc9ce07d195a9db9da132a52f1e8b4f538b7d04		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD2F3 5456 bytes
font_01_sfnt_off0000e550.bin
b0e11f92b0648945e31c866157f7b9990a8351ac7f2a8618f5d39e077b05773d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE550 9980 bytes
font_02_sfnt_off0001079b.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1079B 4324 bytes

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