Malicious PDF — malware analysis report

Static analysis result for SHA-256 61d2302b9a73e9c1…

MALICIOUS

PDF

68.9 KB Created: 2021-02-25 02:51:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f4eeb446e63d74ed10fd54e12b07297e SHA-1: 46d899db1dc5fb6e413d6fe22536127ab60f8b87 SHA-256: 61d2302b9a73e9c154192eb5fe4487242ec6e1f691fa98c04c5d670e23e6b940
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://bologen.ru/wix?keyword=zaca+nunki+medicine+cabinet PDF link annotation
    • http://form-lnstagramcopyrightservices.com/samsung_rf263beaesr_water_filter_resetzt4ae.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491432/normal_6005a51d5a2d2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470977/normal_5fe2f2ed6df20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367912/normal_602968603ce03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479445/normal_6015a548586c5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409621/normal_60053b6fe9d14.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377925/normal_6007ffe15b5cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488336/normal_602b71401c8e9.pdfIn PDF document text
    • http://pozijuza.scienceontheweb.net/what_is_an_average_salary_in_dubai.pdfIn PDF document text
    • http://lnstagram-blue-badge-form.com/biometric_screening_form_uhchg8m2.pdfIn PDF document text
    • http://agentsecure.space/37477944983a8tdx.pdfIn PDF document text
    • http://wemuwetafivaxe.sportsontheweb.net/how_to_reset_a_amazon_smart_plug.pdfIn PDF document text
    • http://clubstore.pro/tizawisojupatulixorpph1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://perexuwofogefo.onlinewebshop.net/how_to_reset_esi_phone_system.pdfIn PDF document text
    • http://jatoxat.atwebpages.com/40293891675.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_off0000cb81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB81 4940 bytes
SHA-256: 8cde726ec6e038e7b6357d6fe9857609c5b10a8568c3f09f09209a13cfeed72f
font_01_sfnt_off0000dc44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC44 12724 bytes
SHA-256: 07671ff1402065e8704af84bed9cdf576ec3c04b18c3b43de6ae4c22e563f1b6