Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ec460027c7bc974…

MALICIOUS

PDF

65.9 KB Created: 2021-01-25 10:35:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 61dc517388ead33f4b2f2c181e44d52e SHA-1: 46e39a1aba5ee2ba6d360000774cb7c0653343c7 SHA-256: 3ec460027c7bc9746854bd66c63cb0301e3d8aab6c4f9898733af9eb12b040e9
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://druttle.ru/123?utm_term=using+tables+to+graph+quadratic+functions+worksheet+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4484821/normal_5ffdc36153a8f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480588/normal_5fce37ec4b646.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374839/normal_5fcf4f0519f0c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410190/normal_5fe461037e840.pdfIn PDF document text
    • https://cdn.sqhk.co/mawedabe/VIyrWup/durusimu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465015/normal_5fe6028bdaef9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499995/normal_5fdda0642c7a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459935/normal_5fd3cf28970c3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413012/normal_60096d73434ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463306/normal_5fd893ce0d2e2.pdfIn PDF document text
    • https://cdn.sqhk.co/jozazixefuf/ejjfNqt/ultra_street_fighter_4_apk_data.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470218/normal_5feb700b123ba.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kovawasokagi.epizy.com/banjo_all_song_mr_jatt.pdfIn PDF document text
    • http://nupadamemal.epizy.com/star_sports_tv_live_app.pdfIn PDF document text
    • http://gatituz.rf.gd/39171149367.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_off0000c136.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC136 5832 bytes
SHA-256: 86023f03c761a6d565c7aa6769b99fce7d432283896fed2952578233f95ba19f
font_01_sfnt_off0000d510.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD510 10904 bytes
SHA-256: 60d56ed89a7f1e5724bacfbde4d8a52df6a514375170210b8a37c08013986662