Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ffff9f59b29f03f…

MALICIOUS

PDF

77.0 KB Created: 2021-02-24 04:07:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 1455259c3a4534329cfa851ce1239cc0 SHA-1: f8afd4288c7bab3dc7b6eb39504a3ace60a7950b SHA-256: 8ffff9f59b29f03fce0adb42e4dcf8a3526926e60bd71735bc5b0d875b278061
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wb?keyword=polaroid%20sx-70%20land%20camera%20repair PDF link annotation
    • https://cdn.sqhk.co/muvotugi/fgghiJu/zojufe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370541/normal_60208155a4dd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379970/normal_5fd71136a746d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408170/normal_5fec88b3afef8.pdfIn PDF document text
    • https://cdn.sqhk.co/bepeguvovori/EFheiiz/32581839078.pdfIn PDF document text
    • https://cdn.sqhk.co/benadujeju/bhfWjdA/mimpi_dreams_mars_walkthrough.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380881/normal_601d5c93122c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450731/normal_5fd2f59845aa3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463824/normal_60199152f1359.pdfIn PDF document text
    • https://cdn.sqhk.co/vewukiziwemi/agcibeS/water_shooter_game_download_for_pc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481406/normal_5ff4056d6bfe0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453718/normal_6029d316272c2.pdfIn PDF document text
    • https://cdn.sqhk.co/zanuvajebodu/haP6mjg/dragonvale_highest_breeding_times.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452392/normal_5fd5f56d6f63a.pdfIn PDF document text
    • https://cdn.sqhk.co/tazakabebilo/elje5LH/toddler_girl_halloween_costumes_2019.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_off0000eee6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE6 5544 bytes
SHA-256: eb352e9d2a893e3b42eda2639e27d7a35d5b3ebe87e3553c04234b72323f41e0
font_01_sfnt_off000101bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101BB 11052 bytes
SHA-256: 0d82b699a460fa56659d51f4c2afd51262878f426ef166c9a78a2c38220d69e9