Malicious PDF — malware analysis report

Static analysis result for SHA-256 82c91055f68df8f4…

MALICIOUS

PDF

84.6 KB Created: 2021-03-17 06:30:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 53bd57f8ce9de97c8288e42b0a97cef3 SHA-1: c1b3ec1b2a8a10d40b87f1c279bd192484303927 SHA-256: 82c91055f68df8f45427e5ae0e3576217b203172cc7a5f03eb1413e126ceeb8d
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://gimoguvi.ru/strik?utm_term=human+anatomy+frederic+martini+8th+edition+pdf PDF link annotation
    • http://kaxiwemusemoj.mypressonline.com/aeschylus_oresteia_themes.pdfIn PDF document text
    • http://luxasireku.sportsontheweb.net/dofipi.pdfIn PDF document text
    • https://cdn.sqhk.co/wenejusuzixe/heZNih5/banana_blast_game_dice.pdfIn PDF document text
    • http://xuzobinemipivor.mygamesonline.org/48287611066.pdfIn PDF document text
    • http://letekidela.iblogger.org/gexolegimivaxifoloxara.pdfIn PDF document text
    • https://cdn.sqhk.co/jurugaguvedu/jqqhb5v/alone_season_6_cast_where_are_they_now.pdfIn PDF document text
    • http://lifelalulenomip.mygamesonline.org/45811040252.pdfIn PDF document text
    • http://medilawibume.scienceontheweb.net/rawaleti.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xurixado/73449252027.pdfIn PDF document text
    • http://muvemaxadal.onlinewebshop.net/zujorabemezimipapev.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/wanufosofegawuw.pdfIn PDF document text
    • http://bajupigirosinaf.atwebpages.com/academic_synonyms.pdfIn PDF document text
    • http://mosasawimip.epizy.com/fokokefefodoladivis.pdfIn PDF document text
    • https://s3.amazonaws.com/subopukomanaw/fexugasoborenedefowabel.pdfIn PDF document text
    • https://s3.amazonaws.com/wutogugej/416_cat_backhoe_fuel_pump.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/jokemobafimidika.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/52576834384.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/cuisinart_coffee_grinder_maker_how_to_use.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/tamil_movie_telugu_2018_tamilrockers_hd.pdfIn PDF document text
    • http://tajiroxajesolut.atwebpages.com/jogitofokasa.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001084d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1084D 5444 bytes
SHA-256: 10773fbf4c1904dfe2fc6b8f1b947aab8e667846291e13ab020540c21311a29b
font_01_sfnt_off00011ab3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AB3 11948 bytes
SHA-256: 15d392f6c7d36f8fa48cbe02c127f5c545774dde620ccc3b5a6077d29239efd8

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