Malicious PDF — malware analysis report

Static analysis result for SHA-256 011a928779cb3579…

MALICIOUS

PDF

70.1 KB Created: 2021-02-21 21:17:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 69a8f65a79e9036ce2861e87ea5b261d SHA-1: d34e804ecbca859c86e1cfa6bc99f323271b8bfa SHA-256: 011a928779cb357936d6465f0eb7bf889ad2ff4a94deb3fea050b519bfe9750d
146 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://jottigo.ru/wix?keyword=1923+silver+dollar+value+mint+mark PDF link annotation
    • http://natikolom.site/1157102925885dk2.pdfIn PDF document text
    • https://cdn.sqhk.co/lexijunibul/2ifnAUr/40791539736.pdfIn PDF document text
    • https://cdn.sqhk.co/kivuwutu/IFhhjg6/vemexeripomijetemebid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410000/normal_600eb1626c707.pdfIn PDF document text
    • https://cdn.sqhk.co/gisepavuv/o1f7qgf/pumpkin_carving_tools_at_home_depot.pdfIn PDF document text
    • http://grenkasalo4.xyz/sharper_image_wireless_headphones_shp921gesov.pdfIn PDF document text
    • http://lighttravel-ng.com/math_practice_for_3rd_grade_online_freeov9qo.pdfIn PDF document text
    • http://nawididu.iblogger.org/80097958627.pdfIn PDF document text
    • http://beautysss.site/la_soledad_de_un_cuerpo_acostumbrado_a_la_herida_poemasdd8c6.pdfIn PDF document text
    • http://yozi.store/indonesian_drag_bike_racings6x5p.pdfIn PDF document text
    • https://cdn.sqhk.co/kupejabel/chbgijb/my_cloud_pictures_iphone.pdfIn PDF document text
    • http://8bitbeardsco.com/beruvetxlr7k.pdfIn PDF document text
    • http://zesamoa.online/how_to_change_ink_cartridge_on_canon_mp250ed9zj.pdfIn PDF document text
    • http://astropsychology.site/laloropibowopubi0o0pd.pdfIn PDF document text
    • https://cdn.sqhk.co/zadoweferoxe/S6hdchf/bowling_ball_dead_baby.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rukukuwozar.epizy.com/simple_compound_interest_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_off0000d509.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD509 5504 bytes
SHA-256: b4df7911e90c80bc786d358ce7805c3012f374c9f5e7de8877608e0483f6bc87
font_01_sfnt_off0000e7b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7B0 10532 bytes
SHA-256: a49859ce23fe0ed758aa9d4576f42d9ba90f8cadcee07463e92f15ae57e6aa0b