Malicious PDF — malware analysis report

Static analysis result for SHA-256 c44cd94535981e3f…

MALICIOUS

PDF

66.4 KB Created: 2021-02-21 22:52:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: bd980c896ef79fe8d47a8ce8b65f3042 SHA-1: 2a36e18d106aec02e8afe19fe3ae7848aa476a5c SHA-256: c44cd94535981e3f37d56a333a0dc0030c4ed291014510154b00aa6c3894fc2c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/wix?keyword=farar+az+zendan+1 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4464311/normal_601333265f608.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407724/normal_5fddbaec4e027.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462362/normal_600f04a8c09ab.pdfIn PDF document text
    • http://sberbank.services/cricket_betting_app_freek2qpi.pdfIn PDF document text
    • https://cdn.sqhk.co/tamaladafa/jvjdjf3/86038572105.pdfIn PDF document text
    • http://detonic-romania.website/banwell_fundamentals_of_molecular_spectroscopynstxn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489587/normal_5fc757a89dc29.pdfIn PDF document text
    • https://cdn.sqhk.co/jememobak/aLwjb60/24087748184.pdfIn PDF document text
    • https://cdn.sqhk.co/fopikudapom/gqKheje/tobeguriduzalugekazakujif.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456687/normal_60078ab7a7c80.pdfIn PDF document text
    • https://cdn.sqhk.co/gobisofokox/BhjhdKN/wink_dating_app_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/josipinu/xyyUhgn/froggy_jumps_rentals.pdfIn PDF document text
    • http://zaxunux.iblogger.org/fredonian_rebellion_worksheet.pdfIn PDF document text
    • http://jumpfs.space/91864780874q166s.pdfIn PDF document text
    • http://dkblogin-de.com/metformin_xr_missed_dosexr992.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kofadokajofej.epizy.com/lenaforumop.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b590.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB590 4664 bytes
SHA-256: a341a9bb94c68e34afe529773f887f548e7f011f673943d59fb4fec0857c3753
font_01_sfnt_off0000c584.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC584 9524 bytes
SHA-256: 37426b34d7b829faab8329b0666e03548a3a32f0d086ebc46e4f66ce6987af45
font_02_sfnt_off0000e642.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE642 16468 bytes
SHA-256: 7d6042a90cdb767598a51aab8da4639d6c6f23c9fe7960d3d1d7de32946d7005