Malicious PDF — malware analysis report

Static analysis result for SHA-256 915b07c080e6d25d…

MALICIOUS

PDF

67.7 KB Created: 2021-02-23 02:21:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0d817048f4e6b89c3e83ebfca72eb9f6 SHA-1: 3c4e1e0b5c1270f9c1ca4a4c7a0b5a9413a1d188 SHA-256: 915b07c080e6d25dac6ca08bfb473c2c2185c28993fcfb5b6eef57f43e4c61cc
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=above+the+barre+geneseo In PDF document text
    • http://sunny-web.ru/kukubonax732f.pdfIn PDF document text
    • https://cdn.sqhk.co/jisokemefaz/PvjdutF/fadigakikalepaxosa.pdfIn PDF document text
    • https://cdn.sqhk.co/wewisadavoj/igVeAII/lunilapobeluwoko.pdfIn PDF document text
    • https://cdn.sqhk.co/paxelababeg/7hewvhe/rugby_world_cup_2019_tv_rights_australia.pdfIn PDF document text
    • https://cdn.sqhk.co/navotezive/bjc1thg/28087854090.pdfIn PDF document text
    • http://lazezubeb.22web.org/jukifaletemado.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485015/normal_600a6b8d45ee0.pdfIn PDF document text
    • https://cdn.sqhk.co/xazururoxe/jevGuxj/smash_it_break_room_denver_co_80223.pdfIn PDF document text
    • http://hushseo.online/cisco_router_basic_commands_listcrwbp.pdfIn PDF document text
    • https://cdn.sqhk.co/guwuweri/iijbhb5/play_4_day_numbers_in_connecticut.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426679/normal_5fdf9eb5134ec.pdfIn PDF document text
    • https://cdn.sqhk.co/vowibesep/sicM2gc/formula_1_2019_xbox_one_game.pdfIn PDF document text
    • https://cdn.sqhk.co/xabiximakef/iagcVjX/hobby_lobby_jobs_near_me_part_time.pdfIn PDF document text
    • http://mugipojezekegul.iblogger.org/84273922152.pdfIn PDF document text
    • https://cdn.sqhk.co/remimidotomi/ic1dlYi/23669290596.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ce68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE68 5104 bytes
SHA-256: 0531d167f911c1bebe585f99ed8ff09c26dd123b0e7610f71b004e1a9767570d
font_01_sfnt_off0000dfc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC6 9928 bytes
SHA-256: c900ec9b5bd1e450c353f0c385ba1a47eb45c9177694669478763cbbab096c07