Malicious PDF — malware analysis report

Static analysis result for SHA-256 82679f7a684422c0…

MALICIOUS

PDF

85.6 KB Created: 2021-03-09 14:01:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: c41dfa4e242f573d4346735bbe69f9c4 SHA-1: d468ffa9059d1fdd4751d73ccca28ff1738d36a6 SHA-256: 82679f7a684422c01c3f25309634997d34b98716d8f713b6124e61a128160cb9
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 URI pointing to a suspicious domain, likely intended to trick the user into visiting a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. No scripts were extracted, but the presence of the malicious URL is sufficient evidence for the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://dugedepap.ru/wix?keyword=bru%2527n+water+spreadsheet PDF link annotation
    • http://jaxagogilexet.sportsontheweb.net/rabanuguxufel.pdfIn PDF document text
    • http://paxezot.getenjoyment.net/57698870364.pdfIn PDF document text
    • http://katipef.medianewsonline.com/agricola_all_creatures_rules.pdfIn PDF document text
    • http://vataponuxizeliz.mywebcommunity.org/40121060542.pdfIn PDF document text
    • http://sezejawi.mypressonline.com/where_to_buy_lg_washer_parts.pdfIn PDF document text
    • http://mokemowowove.mygamesonline.org/light_and_darkness_metaphor_in_letter_from_birmingham_jail.pdfIn PDF document text
    • http://tokepubex.getenjoyment.net/59959882066.pdfIn PDF document text
    • http://didazema.mypressonline.com/the_idiot_book_elif_batuman.pdfIn PDF document text
    • http://tezuveripoxub.mypressonline.com/why_19_in_covid.pdfIn PDF document text
    • http://dexuposi.sportsontheweb.net/a_first_course_in_graph_theory_solution_manual.pdfIn PDF document text
    • http://fiwisud.getenjoyment.net/17810162817.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b053f6d1-4a3e-4035-affa-faf243bd4070/what_is_violent_media_in_psychology.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/alarm_sounds_ios.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f0a844f-d7cf-474b-ac57-4a08f77fbcd8/character_formation_nationalism_and_patriotism_ppt.pdfIn PDF document text
    • https://s3.amazonaws.com/bomifabipi/mawekek.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/48650159476.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3af4f374-ff1c-4828-9d9e-d3f262619cef/62414215555.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/92650287435.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/xerofufofowi.pdfIn PDF document text
    • https://s3.amazonaws.com/vigevot/xibaduwobivofupuwad.pdfIn PDF document text
    • http://ropupifalapoges.atwebpages.com/38854234863.pdfIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/lenakalulodexireli.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_off0001141a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1141A 5192 bytes
SHA-256: 50dc6b89db7c74039a6a827f7a22f6143b719319292cc63385c403e9fa3b20c6
font_01_sfnt_off000125d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125D2 10412 bytes
SHA-256: 8dc4667631d980eb22ac64a243fc4f18acbc3706264a56e267e031346b8bb51d

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