Malicious PDF — malware analysis report

Static analysis result for SHA-256 59d26d71da4bf450…

MALICIOUS

PDF

73.9 KB Created: 2021-02-04 20:07:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: b788cbf06bda6882b20e5348be828c75 SHA-1: 001309b84413f1ebe62532a5c142f2c28489657b SHA-256: 59d26d71da4bf45012a8b3cf54fa040650467ff48d03b7efec304cf5162254d7
176 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://bologen.ru/wb?keyword=skype%20for%20business%20portable PDF link annotation
    • https://sogakuguw.weebly.com/uploads/1/3/1/4/131453515/tupadi_sewuseladenidu_ziremelinedasix.pdfIn PDF document text
    • https://cdn.sqhk.co/xunalafugapa/0bff0ju/king_oddball_halloween_world.pdfIn PDF document text
    • https://gulekikafosevog.weebly.com/uploads/1/3/2/3/132303175/dfaa469266054.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369765/normal_5fec95999b060.pdfIn PDF document text
    • http://pelobana.66ghz.com/gavotte_music_sheet.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381978/normal_5fe4ef60321e7.pdfIn PDF document text
    • https://fazafunapogaz.weebly.com/uploads/1/3/4/1/134131986/supupasedeze.pdfIn PDF document text
    • http://xojitufos.66ghz.com/xafutapebixiduzovubiwog.pdfIn PDF document text
    • https://cdn.sqhk.co/tinupolureg/4hemBic/easiest_chocolate_pudding_cake_recipe_from_scratch.pdfIn PDF document text
    • https://sezavifibeka.weebly.com/uploads/1/3/4/4/134463458/tafenafurigosuvet.pdfIn PDF document text
    • http://jisotevujemi.22web.org/avengers_endgame_movie_in_tamilrockers_isaimini.pdfIn PDF document text
    • https://cdn.sqhk.co/dufelogaruf/hbyjiiw/fraction_calculator_with_steps.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bekabugi.epizy.com/pakuj.pdfIn PDF document text
    • http://koraxirimaxodet.epizy.com/pelavepovuk.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/nccn_guidelines_lung_cancer_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/fonibinaraj/employee_attendance_tracker_excel_template_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/silubebebefuju/tezoferobevap.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/44241140537.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_off0000e5ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5AC 5304 bytes
SHA-256: bf908f0f1ccaa4149e814d13ab5cba8139622e1f6ccf2081096d0e27ba1c6fb0
font_01_sfnt_off0000f7ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7CE 10272 bytes
SHA-256: 7b5dd107a3adc3be807c08ef4cf0a4792d54fe8379a56e9d9e0fb41c73afe65e

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