Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5ff17a0742651c4…

MALICIOUS

PDF

71.8 KB Created: 2021-02-26 23:52:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a83afbc14bcfd9b125e41da2664c1e3a SHA-1: 403d708cb2a93ce49aa67f9e4594ff4f3489dee5 SHA-256: a5ff17a0742651c4f23ac343882f494ad016a13e2fc291ccd5c931de0b63fe1b
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://botokaw.ru/wix?keyword=beatrix+potter+movies+youtube PDF link annotation
    • https://cdn.sqhk.co/suzeboxiwo/eW14Qif/download_game_god_of_stickman_3_mod_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424981/normal_5fc7e50c0e081.pdfIn PDF document text
    • https://cdn.sqhk.co/bipozipo/ehjdAo5/92445608761.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446761/normal_60119b8390326.pdfIn PDF document text
    • http://comforfemj.fun/ask_and_it_is_given_book1ekna.pdfIn PDF document text
    • http://nyvelsets.online/ecology_worksheets_middle_schoolstjon.pdfIn PDF document text
    • http://online-bestshop.xyz/the_rich_brother_tobias_wolff_audioph7s7.pdfIn PDF document text
    • http://fimewot.xyz/cat_in_the_hat_costume_near_mexztoh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370740/normal_5fcb9444a167b.pdfIn PDF document text
    • http://pedrons.space/pekudepimejifitelowitujij23zno.pdfIn PDF document text
    • http://rastet-malysh.ru/40907647893cn1m9.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/wurivuve/html5_simple_template_responsive.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/jupikil.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/digitech_rp360_manual_german.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/facebook_riddle_answer_7_am.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_off0000dcc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC1 5352 bytes
SHA-256: 04d5a09f01f82de6c1d3bd554bdda4278b855900a4aa790673355b120ef375d1
font_01_sfnt_off0000eeec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEEC 10392 bytes
SHA-256: 42db3ab4d0702201c51b8c68c5b8ae0fff94a7035e0b03e531df2511a0128119