Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a91a3712d2b68fe…

MALICIOUS

PDF

70.9 KB Created: 2021-02-27 05:23:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6edec7dfe4bd0e35a32a450715e5a2c5 SHA-1: fdd2a055384468c12fc7ad725d438e66a0f1c4e2 SHA-256: 9a91a3712d2b68fea0a94c100837ab3b319f7c183e3ab0a6692495971b26b3ad
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://fokemale.ru/award?keyword=cameron+hydraulic+data+book+pdf+free+download PDF link annotation
    • https://cdn.sqhk.co/bisuligiga/jgjfjwZ/59605730580.pdfIn PDF document text
    • http://wipunemobak.mygamesonline.org/how_much_do_abap_programmers_make.pdfIn PDF document text
    • http://uscreditcheck.info/section_1_composition_of_matter_work9xz0y.pdfIn PDF document text
    • http://rezisugamufi.22web.org/jurijimibonufubezerudopi.pdfIn PDF document text
    • https://gewasulupav.weebly.com/uploads/1/3/0/7/130740056/nedogamobiko.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwumixe/Lhchhid/avatar_maker_cats_2_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/vagekoxes/YijhdMs/property_brothers_home_design_hack_ios.pdfIn PDF document text
    • http://sarelalitodidi.66ghz.com/terivarifofetumezawag.pdfIn PDF document text
    • https://cdn.sqhk.co/luwokiseg/whhegdH/43934319842.pdfIn PDF document text
    • https://jurivulanikep.weebly.com/uploads/1/3/4/5/134525456/7657235.pdfIn PDF document text
    • http://buloshnaya.site/hp_deskjet_2132_driver_windows_10ai719.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tagugatukosag.epizy.com/bavomifofesalon.pdfIn PDF document text
    • http://vejimugar.epizy.com/work_schedule_rotation_template_free.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_off0000d69a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD69A 5520 bytes
SHA-256: e216366bd2b30ef96597c6a6ae2ea0bf060670f29f1001a078607c28f872c8d6
font_01_sfnt_off0000e946.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE946 10844 bytes
SHA-256: 39182a48d710a97bcbfdb893c3490d7b5f785d7c277992551598dd060b9df86b