Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fafd3b6e3114169…

MALICIOUS

PDF

77.5 KB Created: 2021-03-24 19:40:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 721bfa0e05342a70e1f1e532c6235387 SHA-1: aa4db96d7480d64325628588a8dde06426798fd0 SHA-256: 6fafd3b6e31141694b9b590e425c9d26704e0e8230509a19256429c75a256379
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of external URIs and the overall classification suggest the document is designed to redirect users to malicious content, potentially for phishing or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://maypoin.ru/wix?keyword=best+calculus+help+websites
    • http://biomaniix.website/25869741137ypclx.pdf
    • https://cdn.sqhk.co/votezevon/jiejdk5/hair_braiding_salons_in_west_columbia_sc.pdf
    • http://filanion.online/what_are_canadas_major_bodies_of_waterkmti7.pdf
    • http://ruwufuwetoj.mygamesonline.org/bt_smart_hub_manual.pdf
    • http://rafupofamurawaf.mygamesonline.org/how_to_swing_trade_book.pdf
    • http://sokobumoxagug.scienceontheweb.net/parliamentary_system_in_pakistan.pdf
    • http://dawexefif.getenjoyment.net/what_are_babies_3_month_milestones.pdf
    • http://dutarotanazosuv.medianewsonline.com/amines_and_amides.pdf
    • https://cdn.sqhk.co/tisewesir/copiUhj/tanks_a_lot_realtime_multiplayer_battle_arena.pdf
    • http://faponabon.mygamesonline.org/pdf_to_autocad_converter_with_scale.pdf
    • http://milesnires.xyz/global_reporting_initiative7zh7v.pdf
    • http://xoxosedefoxadu.mygamesonline.org/figimorixafeduzuronetofi.pdf
    • https://cdn.sqhk.co/webuzifinuno/3zEbOhb/jisabavewofewukoluxuw.pdf
    • http://gutprod.xyz/mukurapi47t9k.pdf
    • http://fly-drive.online/how_to_clean_filter_on_maytag_front_load_washerm23he.pdf
    • http://dosijefa.mypressonline.com/adjectives_examples_sentences.pdf
    • http://matimomewojime.mypressonline.com/linux_system_administration_commands.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://62abf401-5fc9-4991-ac00-cb6a0c8cf8ec.filesusr.com/ugd/e4ff69_e667ccd09bca4380a93bbbe834928302.pdf?index=true
    • https://6f4861c6-cdf0-4a5f-ba2d-f9c5e5bfbee6.filesusr.com/ugd/77941b_26f73cea46414cd6b4c5febdf523a4e0.pdf?index=true
    • http://disoluje.myartsonline.com/a_week_in_december.pdf
    • https://94e55d9a-ad7c-4b6b-a54a-a00202ad3087.filesusr.com/ugd/208fd7_01fe42bd01264af4bcc95b621f89f8dd.pdf?index=true
    • http://domuromu.atwebpages.com/ejercicios_de_estadistica_6_primaria.pdf
    • https://c38d9960-f3a4-46a0-b266-cfc7836dd0ed.filesusr.com/ugd/a8d9c8_aa960198a9224f28956bee6927bfeb50.pdf?index=true
    • http://paguxesij.myartsonline.com/nuladesimisopasogawazow.pdf
    • https://e5eb5b25-b33c-43e3-82d5-57ab1bf863d8.filesusr.com/ugd/b0c717_e0192b7cffde471c862344868a488ae0.pdf?index=true
    • 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_off0000e3e3.bin
413968ef38e8daa708cd547fe28ea2e670bdb40973c95699d602d66313827511		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE3E3 4872 bytes
font_01_sfnt_off0000f491.bin
2b005e6dcc310cbcc35160a9257825187c5ddd85470e92678a760be807ed72b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF491 11100 bytes
font_02_sfnt_off00011a44.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A44 4324 bytes

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