Malicious PDF — malware analysis report

Static analysis result for SHA-256 f60ca9cfd5859f2f…

MALICIOUS

PDF

72.4 KB Created: 2021-02-25 07:08:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c3b06f05e378d4b40c3e05ffbfd036d7 SHA-1: 99b32d4c52463e574ccdc5e40a7bad8ffc5d71f5 SHA-256: f60ca9cfd5859f2ffc31f621b89157e3cd5d6ff7ff62d1ca3db925d10ae06089
194 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
  • 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://crophysi.ru/wix?keyword=jenn+air+gas+oven+manual In PDF document text
    • http://dvertsoff.ru/535229228974b80q.pdfIn PDF document text
    • http://bumaga.bz/novecento_baricco_englishyqhkj.pdfIn PDF document text
    • http://wejedakipitag.iblogger.org/mewejanizadodenewupimafun.pdfIn PDF document text
    • http://zzzmmmmejjj.space/jukokokatuvegunabivulomuezw1e.pdfIn PDF document text
    • http://copyrighthelp.info/completing_the_square_practice_problems_and_answersusb1e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471682/normal_6005d78782a62.pdfIn PDF document text
    • http://hookup153.online/3d_tennis_mod_apk_download1bn23.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450419/normal_5ffcdede96dfc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419193/normal_5feefcd53e4c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478414/normal_6035dc8f35485.pdfIn PDF document text
    • http://im-marceting.site/present_perfect_simple_just_already_yet_exercises3k7g8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483349/normal_5ff55ddc0e939.pdfIn PDF document text
    • http://lnstagram-helping.live/ginatapurs13h5.pdfIn PDF document text
    • http://nasufulorejuwe.mywebcommunity.org/75036571056.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://besipopi.epizy.com/lalokakatagagasipefetemu.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_off0000d6ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6ED 5052 bytes
SHA-256: e034394ccbbfa532eefa5d6e0918dff2ffa14f5b8e9670a722601d65b21508b9
font_01_sfnt_off0000e810.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE810 14396 bytes
SHA-256: b6a9234ec087e9f49a61a6c3050e55a42488f83caa0d481a8f2b3082871b8524