Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0aa2f8eb9354034…

MALICIOUS

PDF

73.9 KB Created: 2021-02-08 02:42:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b66d90b3aca02c622ed272e04e2b6518 SHA-1: c806d6be56ba4b839ec756444fb82d57c8c1553a SHA-256: c0aa2f8eb9354034849f65d615be45a058b9d718642b131c3892861a383fb885
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jacksth.ru/wb?keyword=chest%20guidelines%20for%20pulmonary%20embolism PDF link annotation
    • https://cdn.sqhk.co/jutafegobexe/hjjfgjm/82166569485.pdfIn PDF document text
    • http://fisijowizaraxot.iblogger.org/kutapenoxa.pdfIn PDF document text
    • http://iblack.space/tisufizebalipuza6g7a.pdfIn PDF document text
    • http://toteganutiv.66ghz.com/montgomery_county_md_food_stamps_income_guidelines.pdfIn PDF document text
    • https://kimodoximotoden.weebly.com/uploads/1/3/1/8/131856266/110572.pdfIn PDF document text
    • https://cdn.sqhk.co/tajudozizif/ctcx1h4/denizelebeneron.pdfIn PDF document text
    • https://cdn.sqhk.co/lipetebo/RNgh7Iu/gefebatofi.pdfIn PDF document text
    • https://cdn.sqhk.co/zopimoforaja/Vghgc61/us_police_car_racing_2019_free_mod_apk.pdfIn PDF document text
    • https://xixefofitajeres.weebly.com/uploads/1/3/3/9/133999179/netejot.pdfIn PDF document text
    • https://cdn.sqhk.co/bopelara/4Ejfmgd/59012851671.pdfIn PDF document text
    • http://dofuluxaruze.22web.org/77087986600.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wajiletum.epizy.com/59683482395.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/fewos.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/cameraman_ganga_tho_rambabu_dialogues_ringtones.pdfIn PDF document text
    • https://s3.amazonaws.com/nunakixuma/bacteria_cell_diagram_worksheet.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_off0000e0fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0FB 5600 bytes
SHA-256: dd1fb1d8cf369e8c7e68be85ea402da02af72c2305d4f2f2f62376dad6fdf2da
font_01_sfnt_off0000f3d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D7 10996 bytes
SHA-256: 020358a0c11025282e5ff5e6112f9c04b2c942a16a756d21c639bbd7df22f599