Malicious PDF — malware analysis report

Static analysis result for SHA-256 debca6c227ff36d1…

MALICIOUS

PDF

71.0 KB Created: 2021-03-03 05:05:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 42a3525ec11c2ae70433e025a19369eb SHA-1: 7d5de6ffae96260ca67919b336c5788fff9de5e3 SHA-256: debca6c227ff36d169484bd5f8b23bf04e37ff204087e83da7f93e00fe584711
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://gimoguvi.ru/wix?keyword=flud+apk+pro PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4476133/normal_600a914d3b11d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497348/normal_5ff637de9df0a.pdfIn PDF document text
    • https://cdn.sqhk.co/moxulofilose/6RBjahe/jisuzokagab.pdfIn PDF document text
    • http://loberas.22web.org/neverwinter_nights_2_casavir_romance_guide.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459054/normal_5ffb3cb2e5d3a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380079/normal_603506d044885.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422137/normal_5ff54a473613f.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/geradi/how_to_use_pdp_controller_on_pc.pdfIn PDF document text
    • http://fijorolur.myartsonline.com/lukixil.pdfIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/9281012748.pdfIn PDF document text
    • http://wuwiwetagu.epizy.com/tozer_pursuit_of_god.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/sahoo_in_telugu_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/99243474911.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_off0000dc26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC26 4796 bytes
SHA-256: 1964648c090d53f3eae750e9aef68999726e994bd90214b07dca6052413ef4f0
font_01_sfnt_off0000ec86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC86 10308 bytes
SHA-256: 097ec674e0d395d946deb9b1efd7e3f69366b8f618c466cb42263c1bf9c02d02