Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e3736e3fe9d019e…

MALICIOUS

PDF

72.4 KB Created: 2021-03-04 17:33:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a78541ec609d21db4b8a9ef90227039 SHA-1: 2f3b09b535e60a2f7396fc1e04bb3a5328683306 SHA-256: 9e3736e3fe9d019ed2683d15f6011a9dab636a4b13d02fd3a9327546b59a1e51
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains multiple embedded URLs, one of which is `https://resalured.ru/award?keyword=water+softener+salt+chemical+formula`, suggesting a lure to a malicious site. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs indicate it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://resalured.ru/award?keyword=water+softener+salt+chemical+formula
    • http://wifisef.medianewsonline.com/77465497082.pdf
    • http://kujamemapevubu.mypressonline.com/what_is_type_h_transmission_fluid.pdf
    • http://cmb-eco.com/church_letter_of_good_standing_templatewm3si.pdf
    • http://dipenoguzel.sportsontheweb.net/31396560072.pdf
    • https://cdn.sqhk.co/noperizapewo/ngfHhdb/92294054013.pdf
    • http://mosomupusafebin.medianewsonline.com/graco_nautilus_65_3-in-1_harness_booster_rear_facing.pdf
    • http://avto-trokot.xyz/22100437549eiij0.pdf
    • http://dasiwujupuna.sportsontheweb.net/super_mario_land_3_super_nintendo.pdf
    • http://duvejiwuxikon.getenjoyment.net/what_is_the_correct_order_of_operations_when_calculating_data_in_excel.pdf
    • http://trynutra.shop/90172180566gk9tz.pdf
    • http://xojokare.iblogger.org/liftmaster_41a5021-e_manual.pdf
    • http://bepidotagexaxuw.iblogger.org/poroduv.pdf
    • http://axecheat5.xyz/vepifudexonegegelerosoxhp0.pdf
    • http://famozosivupiwij.sportsontheweb.net/nidaj.pdf
    • http://trysalon.xyz/onerepublic_start_again_320kbpsbrkwc.pdf
    • https://cdn.sqhk.co/sirojenu/jdjjhco/dasusefagapirepi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b641b562-44e1-4aec-9e0b-48357a936b59/how_to_write_a_conclusion_of_a_paragraph.pdf
    • https://uploads.strikinglycdn.com/files/c992d7f6-22d1-4ced-a65d-9336f4783d98/miller_heiman_blue_sheet_training.pdf
    • http://dobubijopawuxon.epizy.com/xulefojupet.pdf
    • http://ruwevabebivis.epizy.com/37613963582.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_off0000df14.bin
339819f0bde8d4f070c3925cc790c4bf8e1718e732997b1906fa35220437f04b
pdf-font-stream PDF embedded font (sfnt) at offset 0xDF14 5136 bytes
font_01_sfnt_off0000f06d.bin
53cd7f3356f5dc8caab5eb0f240204b32ed417ef5d2af1c7b7c5ca4023a33182
pdf-font-stream PDF embedded font (sfnt) at offset 0xF06D 10684 bytes