Malicious PDF — malware analysis report

Static analysis result for SHA-256 7455650d26c2495c…

MALICIOUS

PDF

73.5 KB Created: 2021-02-26 04:02:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 79bf47cceb6c7609818ee88530ebb540 SHA-1: 6d64d6b72ef7917772ae3e0dbc1de190ada1875c SHA-256: 7455650d26c2495cdef8520e704ddfa22abb7cd7faf4a766e8179f18f0d75310
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://druttle.ru/award?keyword=how+do+i+resign+as+a+trustee+of+a+charity PDF link annotation
    • http://fotubobuwenapu.scienceontheweb.net/14224446460.pdfIn PDF document text
    • http://onlinesos.tech/get_unlimited_likes_fans_for_tiktokw3z81.pdfIn PDF document text
    • http://vibolofisef.mywebcommunity.org/words_to_describe_good_poems.pdfIn PDF document text
    • http://lebizifijafaxim.medianewsonline.com/percy_jackson_auditions_2021_disney_plus.pdfIn PDF document text
    • http://kakafeg.scienceontheweb.net/samsung_un32eh5000fxza_manual.pdfIn PDF document text
    • http://rostov-mobile-doctor.ru/86328827118di8fo.pdfIn PDF document text
    • http://gojawufeki.getenjoyment.net/how_to_install_gsm_security_alarm_system.pdfIn PDF document text
    • http://esmoney.site/miparoxomodaxug6795q.pdfIn PDF document text
    • http://arnautmebel.ru/14872513760wzo7s.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/zidenigad/muratupajododoj.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/53948375277.pdfIn PDF document text
    • http://sojusubelifaf.epizy.com/bilal_ibn_rabah_biography.pdfIn PDF document text
    • http://diwiludoki.rf.gd/mofiru.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/shaandaar_full_video_song.pdfIn PDF document text
    • http://sumolusekoximu.rf.gd/maytag_neptune_drying_center_dc_repair_service_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_off0000e1f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F2 5408 bytes
SHA-256: 404a8ab32a6c35e095eca7ec1e784ceab9e1da1385fd4f9f6f3144a47f5f721f
font_01_sfnt_off0000f469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF469 10780 bytes
SHA-256: 945721c30f4f8a9a9b36d52ec5b5a8cbf387ef67893a1f0fe90a227b5273ed45