Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee33d52d0d963ab1…

MALICIOUS

PDF

73.0 KB Created: 2021-03-09 01:28:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 4267e78b2c2893ef3a180b363ab33407 SHA-1: c89c98761c183c97fd8a7919c097fe5d913d2e4f SHA-256: ee33d52d0d963ab122db1a6334f95d308a7269a52fe4f87fb0dc469f06f66e8f
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 URL pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery. The document body, though heavily obfuscated, contains metadata related to wkhtmltopdf and a date, suggesting it might be a generated document used as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://nipisod.ru/strik?utm_term=netgear+gs116+vs+gs316 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4402940/normal_5fece737c7717.pdfIn PDF document text
    • http://davorivugexawu.sportsontheweb.net/garmin_dash_cam_55_price_south_africa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488560/normal_5fe7833b322a8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478952/normal_5ff1dc6f362c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386622/normal_600cfbee9f43d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420765/normal_6019ba2f6e57d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4529780/normal_5fe61392d492b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484618/normal_5fe4e6836e221.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372373/normal_601d5f5966fc0.pdfIn PDF document text
    • http://tonevagewalilu.medianewsonline.com/condense_mac.pdfIn PDF document text
    • http://nowukusox.mypressonline.com/all_clad_slow_cooker_lid_fit.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/gurowozenupifi/calendrier_2019_imprimer.pdfIn PDF document text
    • https://s3.amazonaws.com/defujo/34258457607.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/canada_tourist_visa_application_form_india.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21d5fca1-9f07-466e-a03b-c1683d07bb8e/nebitokarobadedowewifeg.pdfIn PDF document text
    • https://s3.amazonaws.com/rolefosiju/juki_ddl-_8700_parts_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fffc030-ac5a-456b-bce3-0932a43a3014/how_to_connect_usb_in_scv_set_top_box.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f991ebdb-6a46-466b-9709-a346ccd3290f/im_ok_youre_ok_mxpx.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57bcd1cb-9a48-4e4a-98e5-c1f34d3625f0/how_to_replace_kitchenaid_oven_control_panel.pdfIn PDF document text
    • https://s3.amazonaws.com/lemefofutomapox/seletezi.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/how_to_fix_samsung_galaxy_s5_dark_screen.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/88903022379.pdfIn PDF document text
    • http://pigutun.myartsonline.com/futodojazez.pdfIn PDF document text
    • https://s3.amazonaws.com/jivagajamav/malifitogami.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe2cb56b-d13e-4011-8007-21d1dc69b0f7/42046069583.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/antiepileptic_drugs_a_clinician_s_manual.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_off0000de2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE2D 5220 bytes
SHA-256: 389f35ccd555811398e11c8add1b357a4d8644ac2f8da772a1a0b9736aed3610
font_01_sfnt_off0000f01c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF01C 11396 bytes
SHA-256: 250ca74b1e825cdc49cc89fba9e4391dabc87428daf7196a5eb24efa0189fa51

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