Malicious PDF — malware analysis report

Static analysis result for SHA-256 df54b9fb12578142…

MALICIOUS

PDF

71.5 KB Created: 2021-02-11 14:52:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 52805235e8d6c5b54246fb4c40dee13c SHA-1: eb64c261a7fcf231fffb233d4a0c0ca55efbcbd7 SHA-256: df54b9fb12578142478bb02210d55b41624f1f0a13dc58aa9bfe1919bd96b708
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wb?keyword=vidmate%20apps%20%20original PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379987/normal_5fe921b31b1f3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416501/normal_5fdda1d17891b.pdfIn PDF document text
    • http://ita-women.space/76911209316bqseq.pdfIn PDF document text
    • https://cdn.sqhk.co/gaxobenona/1bHpx8l/19982744868.pdfIn PDF document text
    • https://cdn.sqhk.co/digiwejasipu/cijs4Si/sasojetavisup.pdfIn PDF document text
    • https://cdn.sqhk.co/vemetafije/cigiage/xumepu.pdfIn PDF document text
    • https://cdn.sqhk.co/bepemuno/jfM0eif/rubirunetudoluje.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459623/normal_6024af20a6d70.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443588/normal_5ffa9e8377a13.pdfIn PDF document text
    • https://cdn.sqhk.co/loxowopiv/gc5RBib/dreamers_by_yuyi_morales_lesson_plans.pdfIn PDF document text
    • https://cdn.sqhk.co/zazavoxujub/hhljijg/ribivite.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443576/normal_60083bdbb2b05.pdfIn PDF document text
    • http://kukudufuwole.iblogger.org/lipipotomokomogi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://varoniwarovez.rf.gd/nubopefobokinojomidiga.pdfIn PDF document text
    • http://kopinakitiwodad.rf.gd/legege.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_off0000db25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB25 5244 bytes
SHA-256: 211faa5b51ee82487e8a0a3d5b1802e06627847fb5601fb8d59a08c2eb7a95ff
font_01_sfnt_off0000ece2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECE2 10768 bytes
SHA-256: a41e1cfa13ded65028f426e8d2eb420473134ac1b09a41811228cbdc72c305e0