Malicious PDF — malware analysis report

Static analysis result for SHA-256 73cfd51f2fe7d009…

MALICIOUS

PDF

72.9 KB Created: 2021-03-01 18:03:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 31c6fd7fdedb255c324c66196b23f97a SHA-1: e427b1dafbf33e027f0768168f51c9e93c3449ea SHA-256: 73cfd51f2fe7d009b7b1040e63c20a53e450ca4579896de56ee5df2316506c72
136 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
  • 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://bologen.ru/award?keyword=roomba+980+costco+canada PDF link annotation
    • https://cdn.sqhk.co/zebenane/d5iihii/hornblower_cruises_newport_beach_wedding.pdfIn PDF document text
    • https://cdn.sqhk.co/lekifuwixal/Rjajhig/45497502507.pdfIn PDF document text
    • https://cdn.sqhk.co/xotosira/obzkDhf/niki_cute_notes_app.pdfIn PDF document text
    • https://nodekisoguzila.weebly.com/uploads/1/3/5/3/135313862/6342129.pdfIn PDF document text
    • https://matazesugol.weebly.com/uploads/1/3/4/7/134702103/jepomisogedudi.pdfIn PDF document text
    • https://bapixive.weebly.com/uploads/1/3/4/3/134393773/rawopakefasi.pdfIn PDF document text
    • https://cdn.sqhk.co/loxepafigav/ghjdKdM/drop_off_definition_in_arabic.pdfIn PDF document text
    • https://cdn.sqhk.co/bodegife/FhgkVex/besazi.pdfIn PDF document text
    • https://cdn.sqhk.co/rovonoset/a8EtrLY/kid_rock_songs_cowboy_lyrics.pdfIn PDF document text
    • https://cdn.sqhk.co/mekaxosur/bqrlNha/who_is_tracking_your_screen_time_tracker.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/toniseligiwuzux/cogito_ergo_sum_inference_or_performance.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/adding_and_subtracting_fractions_with_the_same_denominator_ks2_powerpoint.pdfIn PDF document text
    • https://s3.amazonaws.com/lomogas/asymptomatic_hyperuricemia_guidelines_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/92679243138.pdfIn PDF document text
    • https://s3.amazonaws.com/jefobexapulow/jakoselofiditu.pdfIn PDF document text
    • http://judixipe.epizy.com/lemovagadesosaxog.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_off0000dfeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFEB 5596 bytes
SHA-256: 85c7a40d99d2236358a8b11d05996bca6a206b7db8b80a971d81d20bcc45e586
font_01_sfnt_off0000f2d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D7 10412 bytes
SHA-256: 9b6dc6b473c54b3f98e2c11fde7a98b36bc202ca69a029ca9f37698ec2122ce4