Malicious PDF — malware analysis report

Static analysis result for SHA-256 b77d10fd365ce447…

MALICIOUS

PDF

67.5 KB Created: 2021-02-17 23:11:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d9cceb1548878d04c20186c9682fb145 SHA-1: 313cee017af7473a83b55dbc5960ea8d1a50e3ab SHA-256: b77d10fd365ce447d7a19327ce846f1bab8bb5dfa0374cd97e2355aa549d4fe0
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=guide+officiel+final+fantasy+10+pdf+fr In PDF document text
    • https://static.s123-cdn-static.com/uploads/4446490/normal_5ff0406a8b00b.pdfIn PDF document text
    • http://teren.fun/riforulejerumekepuvag0uts.pdfIn PDF document text
    • http://com-copyrighit.com/nsw_learners_test_questions_and_answersxqkv3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407749/normal_600d8aff793f4.pdfIn PDF document text
    • http://lerawutevokaj.iblogger.org/5713890443.pdfIn PDF document text
    • http://naturagrush.space/nuwowexagukovinojuxorg1x6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393900/normal_600080a7539b2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471706/normal_5febda7d991cc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408478/normal_5fcda40fc0187.pdfIn PDF document text
    • http://comforfemj.fun/19538120191m2df7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408863/normal_6001c6cf2aed3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jofunozuzof/reporting_partial_correlation_spss.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/nbc_1_report_scenarios.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/risk_assessment_form_engineering.pdfIn PDF document text
    • http://pabudixobo.epizy.com/fawlty_towers_theme_sheet_music.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_off0000caaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAAF 5476 bytes
SHA-256: 1b5bed3248034205c9162cdeb9fa2c8d23587603189045f663c1a08583b5380e
font_01_sfnt_off0000dd6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD6F 10380 bytes
SHA-256: 2925832974f28da00e93bcdfc9b81652c2e6d970a5fa8fbdad565fd4f31173b3