Malicious PDF — malware analysis report

Static analysis result for SHA-256 56dcf39fe7bbd2cf…

MALICIOUS

PDF

73.7 KB Created: 2021-02-20 14:39:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 1cfc54b37c384238814a11bcf67f6d22 SHA-1: 1732bf3430ba0080f57e49d0ce29414e7ee3939c SHA-256: 56dcf39fe7bbd2cff94b6bd89e221ab0817e91e70c63d7afc2216b9c06824c1d
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=human+body+systems+worksheets+answers In PDF document text
    • https://cdn.sqhk.co/tabakotodi/ck7jgLA/galaxian_game_for_sale.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368468/normal_5fdd4a3c0d44e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404528/normal_5fcf59fd88cce.pdfIn PDF document text
    • https://silolezozuwagu.weebly.com/uploads/1/3/0/7/130774999/suwuvi.pdfIn PDF document text
    • http://lalashoppen.online/xufoseguziwigaruvetagad7z99k.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417543/normal_5fdf4e3690c8a.pdfIn PDF document text
    • https://cdn.sqhk.co/jadojibam/xhdggBQ/stackable_rings_diamond_and_sapphire.pdfIn PDF document text
    • https://suxaniwaxunese.weebly.com/uploads/1/3/4/3/134385499/wexiv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485696/normal_602a8e32bdf26.pdfIn PDF document text
    • http://meetly.space/23521922893du8l.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388156/normal_602c3e46be12c.pdfIn PDF document text
    • https://cdn.sqhk.co/leporolino/jbCgjvP/lebara_germany_mobile_data_not_working.pdfIn PDF document text
    • http://purpless.vip/70691465722ppa6r.pdfIn PDF document text
    • http://kraftmann.su/tippmann_a5_upgrade_barrelpn3ry.pdfIn PDF document text
    • https://rofoxanubojinud.weebly.com/uploads/1/3/2/7/132740779/fenero-rogozinejobofuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463277/normal_602080e14433f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384851/normal_6010adf0bef42.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365570/normal_5fee6f50e738b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e3c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3C0 5392 bytes
SHA-256: 133ffcefaa144e035cd066a12db9918689b404917b795ef8093039b77c7074fa
font_01_sfnt_off0000f5f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5F3 10600 bytes
SHA-256: cebdaf8358b345bc82dce8537ab1dbd813b6f72c810ffe996fa0cfb32cb2653a