Malicious PDF — malware analysis report

Static analysis result for SHA-256 76a0860c05933b2a…

MALICIOUS

PDF

71.6 KB Created: 2021-03-02 21:03:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 0bd2fdd4adfd80cc18e1d027800278fd SHA-1: 7613b0cc72838e7587c69bba6c23ee3e7bbc1b57 SHA-256: 76a0860c05933b2adf85c67e6ecc36d7239fa4c04abdd2ea44d9b9d86ca04411
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://fokemale.ru/award?keyword=half+magic+book+series+order PDF link annotation
    • https://cdn.sqhk.co/dibitarebizu/iamhhpn/koxevabudumaxoxepifiguf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492272/normal_6029a82d6e31c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402712/normal_601b28f380c14.pdfIn PDF document text
    • https://cdn.sqhk.co/vurikede/hrK40Nw/76761000496.pdfIn PDF document text
    • https://cdn.sqhk.co/lojibuwe/IAgfY9f/space_heater_walmart_outdoor.pdfIn PDF document text
    • https://cdn.sqhk.co/kenoramof/ejhtcql/5833859018.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405193/normal_5fd6779e18aa5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448991/normal_60370de1518aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425515/normal_60172fa5b56e3.pdfIn PDF document text
    • https://cdn.sqhk.co/giganopof/2czxQSy/29292368959.pdfIn PDF document text
    • https://cdn.sqhk.co/woleparos/jbJKBic/get_virus_warning_on_macbooks.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462379/normal_5fd27faa604a5.pdfIn PDF document text
    • https://cdn.sqhk.co/dasisogi/jc9nZha/85394992417.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jatujij.rf.gd/vokiwosomoporatubim.pdfIn PDF document text
    • http://popeganezawojeg.rf.gd/realtek_bluetooth_4._0.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_off0000daf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAF8 5504 bytes
SHA-256: 82d3bd8092ba4c98097038bd2a45699318a7327129260db0149c0e9302ffb957
font_01_sfnt_off0000ed99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED99 10592 bytes
SHA-256: 1c757be10a69c677f2a0da493289c640c50010b0cde026fed207350acd9e952b