Malicious PDF — malware analysis report

Static analysis result for SHA-256 ada1e06c4d9c590c…

MALICIOUS

PDF

67.6 KB Created: 2021-02-12 23:52:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e0a7c5c177deffd5e32ad63c031b8dbb SHA-1: d2b34426e58430206c02d6ef989a82972f972a2b SHA-256: ada1e06c4d9c590cdd0ddd3f5a08001b75a896c6d59d28dc1e1febba95e55bd0
254 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
  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/wb?keyword=free%20template%20after%20effect%20intro%20logo In PDF document text
    • https://cdn.sqhk.co/tutabalero/SFEzhfw/late_birthday_wish_memes.pdfIn PDF document text
    • https://sujibovuf.weebly.com/uploads/1/3/4/7/134705076/bobujinozolilex.pdfIn PDF document text
    • http://liketime.fun/nawijusuxodanezixelufxz411.pdfIn PDF document text
    • http://presentinsta.online/tenncare_attestation_formuqa06.pdfIn PDF document text
    • http://agentsecure.space/julowexipowoiwax.pdfIn PDF document text
    • http://ellmax-site.xyz/ratufilatun75xvo.pdfIn PDF document text
    • http://znatural.space/90653678711fm0g5.pdfIn PDF document text
    • http://theharaka.online/pasasipexumitepcik.pdfIn PDF document text
    • http://kzrovk.xyz/guide_chevalier_dragonuhpyn.pdfIn PDF document text
    • http://faceit.su/black_s_law_dictionary_10th_edition_downloadgfg56.pdfIn PDF document text
    • https://cdn.sqhk.co/wesaduleb/ymcUib6/danger_safari_dash.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/rogugagatuf/7_characteristics_of_living_things_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/fewifuwu/jepixozazojumuwujafupuwiz.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/sadda_adda_movie_hd_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wulotugadag/bujewumizobetogujug.pdfIn PDF document text
    • https://s3.amazonaws.com/wisuw/mudamerefasekejezelu.pdfIn PDF document text
    • https://s3.amazonaws.com/nowonovege/xewuvuwewonizewun.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/birthday_wishes_pics_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_off0000cdeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDEB 5112 bytes
SHA-256: df2f6429e6ced5e75242cd63a7085a8b83aa7fb863502170b6ffb54b7ccca821
font_01_sfnt_off0000df3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF3F 10112 bytes
SHA-256: 68d519dfa6ce48ad534065444f1bdffa6f193ba5a2997d5874377100ce22a18b