Malicious PDF — malware analysis report

Static analysis result for SHA-256 80cf59cd5534a400…

MALICIOUS

PDF

77.1 KB Created: 2021-02-20 22:23:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f73697e45b36a99192194c26951c83c3 SHA-1: 6bc458661ab773d75caae66125f0760f653b9bfc SHA-256: 80cf59cd5534a4001b4f1674295f26c4eabaf0cfb85a6e7adfe9b36fb0121e12
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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/aws?utm_term=english+lessons+for+beginners+classes PDF link annotation
    • https://cdn.sqhk.co/lanasido/MVijKjj/vufiparuxanuxonuxun.pdfIn PDF document text
    • https://cdn.sqhk.co/zogameva/hilifjg/14770406904.pdfIn PDF document text
    • https://cdn.sqhk.co/guwaloxipete/adGmifp/change_color_of_placed_image_in_illustrator.pdfIn PDF document text
    • https://cdn.sqhk.co/sujubowip/2hcYidi/chicken_asparagus_goat_cheese_pasta.pdfIn PDF document text
    • https://cdn.sqhk.co/dobexesi/ijwgfge/williams_pinball_ios_review.pdfIn PDF document text
    • http://tesar-krd.ru/application_catalogue_templatesra7r.pdfIn PDF document text
    • https://cdn.sqhk.co/fukonovum/dbGUuSQ/smashing_pumpkins_albums_list.pdfIn PDF document text
    • https://cdn.sqhk.co/xalibolopov/hgiarH0/35203846474.pdfIn PDF document text
    • https://cdn.sqhk.co/bavimimo/cidjjeV/87910331804.pdfIn PDF document text
    • http://halfraire.xyz/aprende_ingles_online_gratisupfy2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486522/normal_5fdfa73a89aaf.pdfIn PDF document text
    • https://cdn.sqhk.co/numokafas/2asLINX/liziniwidimumori.pdfIn PDF document text
    • https://cdn.sqhk.co/noluxokeruma/jg2jfxy/boxing_star_cheats_ios.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/bopuxosavubare/23117669523.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/xegugurabased.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_off0000f2be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2BE 5240 bytes
SHA-256: 67502045765c81b8ae66bbad8b7d2e0778d841b3fe9ce23892634357991b40bd
font_01_sfnt_off00010496.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10496 10288 bytes
SHA-256: b4dd47483d21675e3f8f456e0e117b712289a4ec64cfdf4f5fc22687d0c7da99