Malicious PDF — malware analysis report

Static analysis result for SHA-256 936096a63ed6e337…

MALICIOUS

PDF

69.0 KB Created: 2021-02-28 03:53:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a50cf97ee63d885bbe2150a06ffcb0bc SHA-1: 6b920b7774c99d93c6def2651fc3fdbc8f68dc05 SHA-256: 936096a63ed6e3373ce7e414569bd96308baca3e5629f75cc4d8e3d62ad13a73
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://mezovuduw.ru/award?keyword=indian+history+books+in+hindi+pdf+free+download PDF link annotation
    • https://cdn.sqhk.co/zezegawutogu/cKgjggp/fifa_world_cup_trophy_image.pdfIn PDF document text
    • http://tasunixupowife.66ghz.com/brightsign_xt1143_firmware.pdfIn PDF document text
    • https://cdn.sqhk.co/dabeluza/ifhbifD/falulejugusadebozi.pdfIn PDF document text
    • https://cdn.sqhk.co/luwagoma/hjgid8i/zombie_killer_squad_full_movie_download.pdfIn PDF document text
    • https://cdn.sqhk.co/mubikidom/hcjgtN9/tidamudamononidaribi.pdfIn PDF document text
    • http://tasezupu.22web.org/20705318517.pdfIn PDF document text
    • https://cdn.sqhk.co/niramojiga/fgigjeu/wisigeri.pdfIn PDF document text
    • https://cdn.sqhk.co/zatugudaxaji/Jhdhheo/golf_impact_bag_diy.pdfIn PDF document text
    • https://cdn.sqhk.co/vaxarogajib/dYQgegf/fonts_for_iphones.pdfIn PDF document text
    • https://sinitilelimokiz.weebly.com/uploads/1/3/4/3/134348988/b0bd2b48acd57.pdfIn PDF document text
    • http://muzibatixabu.mypressonline.com/what_are_good_books_for_14_year_olds.pdfIn PDF document text
    • http://palikexifumalam.mywebcommunity.org/47518877938.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/vuzotisenixava/34737379655.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_off0000d1cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1CF 5464 bytes
SHA-256: dada8d6fafa4239f1ee08017859a33788bdf582a3d184b52c34e492b6496438d
font_01_sfnt_off0000e472.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE472 10168 bytes
SHA-256: 79bf1151497648c0b3105cd8a15bff87b7ea87eb869e5ed5ecf77f7da59fa4bf