Malicious PDF — malware analysis report

Static analysis result for SHA-256 70252596a4105daf…

MALICIOUS

PDF

68.8 KB Created: 2021-02-23 20:40:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4c454a9314e10c0440cbe1a773441e86 SHA-1: 7fb9e5efec053d601812d94473e7f7a2d3d390ab SHA-256: 70252596a4105daf8f02779032a52c8b670d84a5481e02625a32ba975ae6d8ad
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/123?utm_term=the+pilgrim%2527s+progress+full+movie+free+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369185/normal_602de4e89cc6d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369516/normal_5fcecb78764cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386824/normal_6014222340b5f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493890/normal_5ff8bb3dbf4a2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460060/normal_5fc7fed924f02.pdfIn PDF document text
    • https://cdn.sqhk.co/zumedizojas/jX4ghie/bridge_constructor_stunts_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/nolagutotato/ijiehie/rerezikikisuxodawe.pdfIn PDF document text
    • https://cdn.sqhk.co/perigupa/uF3TiiD/52819025780.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408875/normal_602d94950a01d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379720/normal_6018bd4992c1f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428039/normal_601e0b2c5220c.pdfIn PDF document text
    • https://cdn.sqhk.co/sepovili/9usigie/visezuwo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380209/normal_602cfcf40fde3.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/patotale/broken_but_beautiful_movie_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/arabic_alphabet_fonts_free.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_off0000ced3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCED3 5588 bytes
SHA-256: c39db7e769945a064982c01c0ba760635f00dd60867cf1af0c2e1affc6457c6b
font_01_sfnt_off0000e1c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C9 10584 bytes
SHA-256: ce700f8e936277920837bd3c0388629e4b07b5886e03c0e222b85907c04764b5