Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2a985e2f06fff1a…

MALICIOUS

PDF

72.5 KB Created: 2021-02-24 08:24:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: cabfc69404fdfbe5d7059df1beea7a99 SHA-1: d4e17e184a90f96bb0c243aa316d3977586eb77d SHA-256: f2a985e2f06fff1a2eb9fd6e2021ac2ddc3708ec5ae7860a33b2433035fc91ec
194 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
  • 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/123?utm_term=is+devil+wears+prada+based+on+a+true+story In PDF document text
    • http://repair-monokoles.ru/create_sql_tables_in_pythonq4lwh.pdfIn PDF document text
    • https://cdn.sqhk.co/pugalaleluti/8jlThcT/dragon_mania_legends_hack_tool_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426822/normal_5fef645536fd0.pdfIn PDF document text
    • http://edaruzal.xyz/71270943448zr8bq.pdfIn PDF document text
    • https://cdn.sqhk.co/faroziwe/kidgcii/change_color_of_part_of_image_app.pdfIn PDF document text
    • https://cdn.sqhk.co/filodomazora/gge3ici/34066101492.pdfIn PDF document text
    • http://twobigs.space/176375956568q1nj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414871/normal_601233797e2b2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481397/normal_5fe225a0cfe43.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408718/normal_6011d41eb6ff5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454822/normal_5fde795b63e37.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423750/normal_6010a83a6f911.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390056/normal_5fda36d8c267a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501193/normal_600f9b373d6ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411709/normal_5fdbb7693ac63.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_off0000df36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF36 5284 bytes
SHA-256: f998f5d3c6ac408d4f4d769f08667cd4c51f0377396e8dbbbd2c45ead56cf6cd
font_01_sfnt_off0000f14c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF14C 10488 bytes
SHA-256: e4fd053621b98c4d64b0110cbd7286b5310b41246fcd6373200478a041705f80