Malicious PDF — malware analysis report

Static analysis result for SHA-256 387429e5914a486e…

MALICIOUS

PDF

69.3 KB Created: 2021-02-14 08:37:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 898d6badc749cca780974d1bf497c3a1 SHA-1: a86c574ff9bfd652a501a569cacb6a0a4d773921 SHA-256: 387429e5914a486e890b6ba13459a487771c97a60403b03864553c59a998c64b
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=aha+bls+instructor+manual+free+download In PDF document text
    • https://cdn.sqhk.co/woxemumi/Iprhehg/faloxudevomigiz.pdfIn PDF document text
    • https://cdn.sqhk.co/xevowuto/cf1Cwhi/bo_staff_training.pdfIn PDF document text
    • https://cdn.sqhk.co/ratugetaj/jegcidl/age_of_ottoman_walkthrough.pdfIn PDF document text
    • https://cdn.sqhk.co/lepavenujal/LTjgI0B/34_aviemore_loop_kingsley_wa.pdfIn PDF document text
    • http://pimuxiv.22web.org/auto_tune_pro_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/tavanaru/il2K2Fa/canon_camera_connect_for_windows_10_pc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385028/normal_5feb9626a914a.pdfIn PDF document text
    • https://cdn.sqhk.co/tebefaravuz/ggmigk1/nobigufazaxodozubuze.pdfIn PDF document text
    • http://kogegoleteneka.iblogger.org/disororovevikibupulizasi.pdfIn PDF document text
    • https://cdn.sqhk.co/koditisalupe/HHehbBs/95950982259.pdfIn PDF document text
    • https://cdn.sqhk.co/zobarimumuje/6vhhHMh/xezuvobevezunumuworemab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480382/normal_5fd031b3f11c7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421354/normal_5ffbb5ab26bb1.pdfIn PDF document text
    • https://cdn.sqhk.co/vakamuzawa/phiigfn/lemon_cake_recipes_from_scratch.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/kI9gwgd/jaritakuvujogow.pdfIn PDF document text
    • http://rijupoxog.22web.org/96287465840.pdfIn PDF document text
    • https://cdn.sqhk.co/ragojagef/8HHhghi/roller_coaster_arcade_bundle.pdfIn PDF document text
    • https://cdn.sqhk.co/javukapegami/iHNMPij/home_design_3d_free_download_for_windows_10.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sivadanoxibive.epizy.com/sales_performance_appraisal_phrases.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_off0000d2bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2BD 5480 bytes
SHA-256: b3f0f29abcc510707cd09bc875e372f87b523360ce9ed844771c584d7a8d28a8
font_01_sfnt_off0000e545.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE545 10112 bytes
SHA-256: cf4a453f2adf3ee07cde386a0baf0da54435c75983dfc1ad0bff98ca923e416c

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