Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a1fbd176f8e2be1…

MALICIOUS

PDF

78.1 KB Created: 2021-01-29 08:58:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1229539482b4c485275b4819b937d154 SHA-1: 9c1dc38fbcac4433c17201110c637f01032cfb87 SHA-256: 9a1fbd176f8e2be1a2bb8ac675bc8b9be57fd3ad2b1a85784717189b854c2ce5
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/wb?keyword=ways%20to%20kick%20a%20soccer%20ball%20harder In PDF document text
    • https://static.s123-cdn-static.com/uploads/4371790/normal_5ff76963ce30f.pdfIn PDF document text
    • http://bigmagazin.xyz/weird_and_strange_facts_about_the_solar_system97d9h.pdfIn PDF document text
    • http://dressnbuy.com/nietzsche_the_gay_sciencee9x19.pdfIn PDF document text
    • http://sosyaltakipcipanelin.com/gitadizolefav3ozfv.pdfIn PDF document text
    • http://trokot-shtorki.online/a_manual_for_living_epictetus_free_downloadtjyx0.pdfIn PDF document text
    • http://remontnatali.ru/www_bogglesworldesl_com_2006_skeletal_system_crossword_answersto22t.pdfIn PDF document text
    • http://soinjaga.ru/sad_background_music_ringtone_mp3_downloadfy25m.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/sixenogafopoj/the_attractor_factor_summary.pdfIn PDF document text
    • http://tonezifimoraga.epizy.com/lakugolomojavuvopodewatoz.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/android_camera_tutorialspoint.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/synology_ds218_setup_guide.pdfIn PDF document text
    • http://josuremase.rf.gd/29994903268.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/greece_greek_reporter_category_news.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/free_indesign_template_ideas.pdfIn PDF document text
    • https://s3.amazonaws.com/pulujolatepuv/greenworks_40v_chainsaw_manual.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_off0000f430.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF430 5348 bytes
SHA-256: 9eac853a6585660a68eb118c174dae927c1f4ac8171fe06eea6e62d1bef66edd
font_01_sfnt_off00010667.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10667 11104 bytes
SHA-256: c9dc2d399afb23ea7ac5909696aa84b528a099e66a3849a8853516745cc63b27