Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0aa2f4ed6171272…

MALICIOUS

PDF

71.2 KB Created: 2021-02-10 04:48:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 50487c48d06ae2a21cc1c7d557b900ae SHA-1: 6f9cf0d969a97fbbce4175ee6612cf2e43c66959 SHA-256: e0aa2f4ed6171272fd0e9d43bdec9e0fb63d16590e2e0f95ca1c0b404986d7ba
202 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://crophysi.ru/wb?keyword=product%20registration%20card%20template In PDF document text
    • https://cdn.sqhk.co/xetokive/dAxOB2u/dog_runny_nose.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418987/normal_5ff8b10c86f30.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498842/normal_5ff42744530b5.pdfIn PDF document text
    • https://cdn.sqhk.co/nulusezitelo/lCgcQja/kixabubefejevevakig.pdfIn PDF document text
    • http://servisvds.ru/suzinujudosazubrqcd.pdfIn PDF document text
    • https://cdn.sqhk.co/lusajiki/lDghcgi/download_grow_tower_castle_defender_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/tusifefovozu/jf6YeUp/18228977947.pdfIn PDF document text
    • https://cdn.sqhk.co/gijosevozu/dGNhegg/paxilikovibe.pdfIn PDF document text
    • https://cdn.sqhk.co/kexofodatop/lsqvHgf/bojumiku.pdfIn PDF document text
    • https://cdn.sqhk.co/pofilese/iiORjjj/8514708426.pdfIn PDF document text
    • https://cdn.sqhk.co/towojutal/ibiejfM/taxuxa.pdfIn PDF document text
    • http://tegikelekosux.22web.org/12001896339.pdfIn PDF document text
    • https://cdn.sqhk.co/lapefuxolu/DSAhiBL/arcade_donkey_kong_emulator.pdfIn PDF document text
    • http://yandex-dostav.ru/cyberpunk_wallpaper_for_pcbla4q.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lumaradidufil.epizy.com/newirebawino.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_off0000da12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA12 5392 bytes
SHA-256: 7fff3809fd3ec738adb5c0c457dd3b2e0b4a060b7f337dd4663d8a6513d1d0b3
font_01_sfnt_off0000ec4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC4C 10472 bytes
SHA-256: 51ce6af30d89cf8c211370aac1c1f86f87e51f544a92c53d4998ce5a438a9d99