Malicious PDF — malware analysis report

Static analysis result for SHA-256 b19c742e49342332…

MALICIOUS

PDF

64.7 KB Created: 2021-03-02 00:57:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e76b4960cd344482ff5670f4ca4c5e44 SHA-1: 2fbeec35617ddacbf917e6631ae809bb1049fed4 SHA-256: b19c742e4934233246d247bd8216bcbc33da5600ad521feb2e74c3484465bef4
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://dafemum.ru/award?keyword=5e+dm+screen+digital In PDF document text
    • https://cdn-cms.f-static.net/uploads/4496391/normal_602e74803e37a.pdfIn PDF document text
    • http://betizekaxu.getenjoyment.net/asus_m5a97_plus_usb_3.0.pdfIn PDF document text
    • https://cdn.sqhk.co/divoxisig/Qhaiajf/wings_and_rings_weslaco_happy_hour.pdfIn PDF document text
    • https://cdn.sqhk.co/lewiwifo/figGBiB/sabupifuzekezikix.pdfIn PDF document text
    • http://kefijor.mygamesonline.org/xuweroresobomorifizera.pdfIn PDF document text
    • http://lefavapexusa.iblogger.org/27699338679.pdfIn PDF document text
    • http://dizititakozazi.mywebcommunity.org/29551556760.pdfIn PDF document text
    • https://cdn.sqhk.co/mugapowejog/hjPiwaQ/my_talking_dog_mod_apk_download.pdfIn PDF document text
    • http://befotuke.mywebcommunity.org/23276884275.pdfIn PDF document text
    • https://cdn.sqhk.co/femelofep/SbJpoih/service_properties_trust_ihg.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/panokojol/bitokanukebe.pdfIn PDF document text
    • http://xomapagovujux.atwebpages.com/31118631975.pdfIn PDF document text
    • https://s3.amazonaws.com/lazesej/monitor_cardaco_com_gps_polar_m430.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/47149276370.pdfIn PDF document text
    • https://s3.amazonaws.com/kevava/castrol_vecton_15w40_safety_data_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/juzinaramip/afreen_afreen_instrumental_ringtone_pagalworld.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_off0000c08d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC08D 5288 bytes
SHA-256: 84b25d87351807c98673cb84d36eb35a305241e3e4b80b40d9a549d262d9a571
font_01_sfnt_off0000d270.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD270 10488 bytes
SHA-256: 54f95e98138aaf0b414e30f15b3be5d4c1aafe9ddc8b020e3a39e04b6c64a2cc