Malicious PDF — malware analysis report

Static analysis result for SHA-256 e18e2854e155394b…

MALICIOUS

PDF

69.4 KB Created: 2021-02-27 16:26:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: f5bf92160897d2745dac526659c21c9b SHA-1: 0029c2e9877a349a3aed315ea88e991976292d42 SHA-256: e18e2854e155394b3ac108a38aa49b87dc3bad3d71ad6b1c05c64bfb1900f1c0
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://yafferge.ru/wix?keyword=vpn+full+programlar In PDF document text
    • http://fresh-ita.fun/xabasogelefuwikab9qv4.pdfIn PDF document text
    • http://copyrightproblem.com/nujijizisuruvubewarimugigewrmd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381766/normal_6017757773366.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471464/normal_5fde498b58927.pdfIn PDF document text
    • http://sreda.city/boules_rulesgzvmt.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462350/normal_5ffdc48e09235.pdfIn PDF document text
    • http://kfcrabota.ru/nenowoxurexesekilawumexpgms.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369629/normal_600dd3424617e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387807/normal_6000948c548cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416929/normal_601baba95e549.pdfIn PDF document text
    • http://dommasters.site/8th_standard_maths_textbook_answerssjm0c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478928/normal_5fde66b94d61c.pdfIn PDF document text
    • http://worldhold.online/kali_linux_tutorialca3aw.pdfIn PDF document text
    • http://prodson.space/que_es_cianuro_wad76cin.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ziwemasux.myartsonline.com/samsung_one_connect_mini_cable_3m.pdfIn PDF document text
    • http://ziketikivanodiw.epizy.com/international_cricket_ranking_all_format.pdfIn PDF document text
    • http://gegawuwiru.epizy.com/handy_3d_scanner_apk.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_off0000d4a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4A8 5008 bytes
SHA-256: 8f0d27abcd475298e94cc7ac9169c972262efedebab1d9cfa4c11c3c6c678adb
font_01_sfnt_off0000e5a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5A8 9928 bytes
SHA-256: 83238834b9d787e1ba300a39fcedea10e7a84dd8ba4258fd4d59379d798ea9c9