Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d9b043d0adcba49…

MALICIOUS

PDF

69.1 KB Created: 2021-03-15 17:16:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 98c35528a819ce616dac495652deb5ac SHA-1: 5ce539c92e1a65fdb55dc60f489e4d15725f5d75 SHA-256: 9d9b043d0adcba4918bd1de9b8d1ee905b31423743d2b08e597e11d31eb52e97
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to exploit users by presenting a seemingly legitimate document to trick them into visiting a malicious site.

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://leonvi.ru/award?keyword=ine+ccna+routing+switching+workbook+pdf
    • http://d2-club.ru/takidemupovdrafr.pdf
    • http://creditscorehelp.info/viking_refrigerator_water_filter_bypassymxhv.pdf
    • http://sodaapp.pro/73969331326keask.pdf
    • http://uk-delfin.ru/dd_5e_unearthed_arcana_class_listc0yqh.pdf
    • http://wabowiwajej.iblogger.org/different_types_of_sentence_starters.pdf
    • http://artistichomesolutions.com/h2o_x5_steam_mop_pump_not_workingrto9s.pdf
    • http://poriwesebu.22web.org/wexogadanukufojeduti.pdf
    • http://euroshopmn.space/libiwozi860k7.pdf
    • http://beremoter.online/xusokiseorvw3.pdf
    • http://olivamebel.com/gefirapupuwamuxawefaxefq6vz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jepuvituxog.rf.gd/bagabakireloloravera.pdf
    • https://uploads.strikinglycdn.com/files/9abb9b1d-28f1-47fd-b5c0-f56093cef498/gonelasage.pdf
    • https://uploads.strikinglycdn.com/files/0f8984fb-ff4d-43d8-b41e-9f2dacbaf7a8/34763284108.pdf
    • http://zedoliwitimevaf.epizy.com/can_i_apply_for_food_stamps_online_in_nj.pdf
    • http://vomadiboliwod.rf.gd/sasejo.pdf
    • https://d872ce2a-2baf-4032-ab86-ab75b2f66d52.filesusr.com/ugd/338562_b6344d4264b24cd6835e2245170e8630.pdf?index=true
    • https://01d67eed-50ba-4ccb-8f82-c1581f7ed07e.filesusr.com/ugd/e3325f_7deb34de965c49a1b018e02fc77797b4.pdf?index=true
    • https://uploads.strikinglycdn.com/files/874e6202-1fdb-4039-b81a-c94c3a871673/kifexasejafodowa.pdf
    • http://wakurenup.epizy.com/the_effects_of_climate_change_on_plants_and_animals.pdf
    • https://uploads.strikinglycdn.com/files/bd34846e-3b28-4726-8b80-8395f91396b8/34499114598.pdf
    • http://jufomotapi.epizy.com/48814436269.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_off0000d132.bin
cfc4060c9f9f22014a501e26f94c5ca20aa4af273c2b31b168ea6954181f5c6f
pdf-font-stream PDF embedded font (sfnt) at offset 0xD132 5620 bytes
font_01_sfnt_off0000e455.bin
6fcf86e90d15a7bb0296120dbbe6e609bb872e97345b80f673de8d84528bc029
pdf-font-stream PDF embedded font (sfnt) at offset 0xE455 9992 bytes