Malicious PDF — malware analysis report

Static analysis result for SHA-256 329a5b6f6aafae82…

MALICIOUS

PDF

78.9 KB Created: 2021-03-23 16:07:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61abbf4edc2b27f5b5b6211506adbdd9 SHA-1: dac4b7e96955e9beae7eea39c49173f49ecf1f51 SHA-256: 329a5b6f6aafae8207036df40f0ecdf2447e0f11787f1bd7f0920dbdd461b780
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely used to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to a resume objective.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://maypoin.ru/wix?keyword=chemical+engineering+resume+objective
    • http://xafopawiki.medianewsonline.com/acer_chromebook_15_cb3-532_factory_reset.pdf
    • http://ronifibofizet.medianewsonline.com/apotheken_umschau_mrz_2020.pdf
    • http://sitebomobegux.sportsontheweb.net/how_to_draw_books_for_9_year_olds.pdf
    • https://kaxamutibe.weebly.com/uploads/1/3/5/3/135348628/fofadofob-juparomiw-nigapowiton-sogapamenej.pdf
    • http://lazirawolewok.getenjoyment.net/97241243728.pdf
    • http://gepexoliv.medianewsonline.com/22008644934.pdf
    • http://kalidejomepajo.scienceontheweb.net/california_dmv_real_id_application_form.pdf
    • https://ganubidorebe.weebly.com/uploads/1/3/2/7/132740923/52801.pdf
    • https://gabanifuvumot.weebly.com/uploads/1/3/4/5/134588994/c50d08c40b2182.pdf
    • https://zevixaxilifudex.weebly.com/uploads/1/3/4/1/134131629/7451080.pdf
    • https://figapizezedop.weebly.com/uploads/1/3/4/3/134364787/1682788.pdf
    • http://leseweremizew.scienceontheweb.net/the_beginning_of_everything_film.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/mubefula/libro_de_fsica_2_secundaria_2020_sep.pdf
    • http://kivarutumo.myartsonline.com/ejercicios_de_movimiento_rectilineo_uniforme_variado.pdf
    • http://butojoboxorak.epizy.com/71704330474.pdf
    • http://bumufir.rf.gd/99799502966.pdf
    • http://lejiletuvasipib.onlinewebshop.net/bejuwuxik.pdf
    • http://vanepozimor.rf.gd/free_powerpoint_templates_business_proposal.pdf
    • http://loxebexadozivif.rf.gd/rusavuxuwuxofive.pdf
    • https://s3.amazonaws.com/rubidokezive/the_chronicles_of_narnia_the_silver_chair_2020.pdf
    • https://uploads.strikinglycdn.com/files/617731ae-678a-48a4-b64d-08fb90ae7293/88329617150.pdf
    • http://welolazudadiv.epizy.com/maximum_ride_books_in_order_yahoo_answers.pdf
    • https://uploads.strikinglycdn.com/files/48c281ad-eca6-4d24-83fe-20078adb2a0c/projective_geometry_and_its_applications_to_computer_graphics.pdf
    • https://uploads.strikinglycdn.com/files/8c0808b7-3647-4e39-ab61-88a5badc7cf3/87566423876.pdf
    • https://s3.amazonaws.com/pibabopuduj/accident_report_florida.pdf
    • https://s3.amazonaws.com/zidenigad/67190080050.pdf
    • https://uploads.strikinglycdn.com/files/ed93b0a8-7880-4521-8faf-9aae1bf71e09/93665972704.pdf
    • https://uploads.strikinglycdn.com/files/8e5a7e0a-f77e-45f6-be5f-2f2b584e0981/metal_gear_solid_2_substance_pc_ps4_controller.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_off0000f5e1.bin
3713babf62aed7864242b6dcdcb5b022023d5315a036dc4106c952885adbc629		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF5E1 5396 bytes
font_01_sfnt_off00010814.bin
39137097771366a068946f019b422bbf6161ca5dfe54574357a17952988fa8dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10814 10524 bytes

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