Malicious PDF — malware analysis report

Static analysis result for SHA-256 b454058a1d5383b9…

MALICIOUS

PDF

67.3 KB Created: 2021-01-28 21:49:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0adc16943f114974894f89247f8d0fa0 SHA-1: d077b1b318c1ade0156dec3d19a9a594b310fff6 SHA-256: b454058a1d5383b9561c3fad05fa85e72bb1b8333e8da43ff82ba7b442e2cf69
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://leonvi.ru/aws?utm_term=platform+7+williams+landing+menu PDF link annotation
    • http://lnstagramcopyrightcenter.com/ayrt_says_nedirazgh9.pdfIn PDF document text
    • https://cdn.sqhk.co/guzowozuk/ifhhmhf/rigasepudow.pdfIn PDF document text
    • http://kellys.space/59893478987m6184.pdfIn PDF document text
    • http://bnatural.space/arzareth_yeezy_stock53f1z.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455207/normal_600848f19a43e.pdfIn PDF document text
    • https://cdn.sqhk.co/sivefuxonix/k8icppX/vowilowabojevur.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368244/normal_5ff0214427da8.pdfIn PDF document text
    • https://cdn.sqhk.co/folamudoj/hagcT2M/age_of_empires_2_steam_key.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367922/normal_5fe4a86a44a3e.pdfIn PDF document text
    • https://cdn.sqhk.co/xexisini/u01Khii/download_crazy_for_speed_3d_mod_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418584/normal_600416e9675f4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419644/normal_5fe092ca133b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455380/normal_5fd09eb46c4dd.pdfIn PDF document text
    • http://fotonagosuslugi-01.space/actiondash_digital_wellbeing_screen_time_helperslmj9.pdfIn PDF document text
    • http://jifoxife.66ghz.com/83734558750.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c936.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC936 5400 bytes
SHA-256: 5895561a269ea08e50e008da7fa3f2b9aab07fe404e2d5515893455555d07bf0
font_01_sfnt_off0000db9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB9B 10876 bytes
SHA-256: 03160fcdfd33637dac18d6a75bc6f03439cffbcf3ad6dee97597a7a389b3e84f