Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a7f990acfc5913d…

MALICIOUS

PDF

78.1 KB Created: 2021-03-16 22:29:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 18cb1dd8a4174c2d09a0049cf013ca8e SHA-1: ec934d4964b9dd263972f693e157e387411617f5 SHA-256: 2a7f990acfc5913d1e54d1ddf968eeb7d82af4f71071cf8d720b748b1823263d
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to redirect the user to a malicious site.

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://jumiwimov.ru/strik?utm_term=the+edge+of+never+book+2+read+online
    • https://cdn.sqhk.co/patagarinixa/hhTsnCs/nalapotikigaxorafuvifuze.pdf
    • https://cdn.sqhk.co/lewiwifo/mUfoDhc/planet_waves_tuner_battery.pdf
    • https://dubitofux.weebly.com/uploads/1/3/4/4/134458445/kewepidufidajulim.pdf
    • http://dabutaxezopis.iblogger.org/wejumiw.pdf
    • https://cdn.sqhk.co/buxifuludo/4Niaxig/firefox_52_portable.pdf
    • http://jalojewaga.mypressonline.com/35713280438.pdf
    • https://cdn.sqhk.co/lemusezilaz/jigS2ha/sunokuwa.pdf
    • https://ferovagadimi.weebly.com/uploads/1/3/2/6/132696304/09cea.pdf
    • http://kixiwogazu.sportsontheweb.net/arthur_clarke_the_sentinel.pdf
    • https://japafapu.weebly.com/uploads/1/3/1/4/131437770/xoporaminegomak-vuxawefenejat-jujomugotawuwu.pdf
    • https://fonekukiko.weebly.com/uploads/1/3/5/3/135393218/lefowi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://daralake.epizy.com/soresoxi.pdf
    • http://nolumuj.epizy.com/xamarin_sqlite_tutorial_android.pdf
    • https://s3.amazonaws.com/nunakixuma/xugufajiva.pdf
    • https://uploads.strikinglycdn.com/files/83cc8d96-a3a2-4e34-af4f-3ad2c6d8d2c5/11727960067.pdf
    • https://uploads.strikinglycdn.com/files/a4aa60ca-c6e6-41eb-b27b-a2db6229854f/para_que_sirve_el_te_de_manzanilla_con_lavanda.pdf
    • https://uploads.strikinglycdn.com/files/736ac341-4aa1-46f6-84cd-ab46d8b5960b/zilusamujaxekoga.pdf
    • https://uploads.strikinglycdn.com/files/11e2e558-874d-41f4-89b1-ed8dae4a3ba4/invent_your_own_computer_games_with_python_4th_edition_download.pdf
    • https://s3.amazonaws.com/lazolu/beersheets_fantasy_football_2019.pdf
    • http://bizetifokikifa.epizy.com/what_is_an_emta_cable_modem.pdf
    • https://uploads.strikinglycdn.com/files/a0353832-b087-4011-9c41-00a8db7c4574/the_rise_of_scourge_pages.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_off0000f55b.bin
a29e14817ecc09e8819c99bcdd82516fcf50d02e83a9e9aedceca25f4ac9e3ed
pdf-font-stream PDF embedded font (sfnt) at offset 0xF55B 5336 bytes
font_01_sfnt_off00010785.bin
cd9fef6be4086c8682e52961716829275c331ebdf1a38fd4111d98572a503e8a
pdf-font-stream PDF embedded font (sfnt) at offset 0x10785 10448 bytes