Malicious PDF — malware analysis report

Static analysis result for SHA-256 80758547bbc24638…

MALICIOUS

PDF

75.0 KB Created: 2021-02-13 04:39:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: f3b75a4ec6550dcfeb308af30fb2eaf5 SHA-1: c6a2ca06ea8ffc65b17216bdd3f4d0fc880fbb88 SHA-256: 80758547bbc246384213cd64ede388c914067822970f7deb7163525d738cf5cd
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • 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://druttle.ru/wb?keyword=formato%20para%20pagar%20antecedentes%20no%20penales%20cancun PDF link annotation
    • https://cdn.sqhk.co/luwivimexu/Fwhaqhc/facebook_lite_messenger_dark_mode.pdfIn PDF document text
    • https://cdn.sqhk.co/pijovowifil/ji8ifge/65625364223.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385021/normal_601a7f310d81f.pdfIn PDF document text
    • https://cdn.sqhk.co/wasusoguba/g8SYTie/broken_heart_free_images.pdfIn PDF document text
    • https://cdn.sqhk.co/derebeduno/ChahjZv/danimofodatesoru.pdfIn PDF document text
    • https://cdn.sqhk.co/nanubebebot/xSyhiji/raspberry_jam_without_pectin_or_sugar.pdfIn PDF document text
    • https://fojivefejiba.weebly.com/uploads/1/3/0/7/130775352/gupajen-jujakakiken.pdfIn PDF document text
    • https://nokajadum.weebly.com/uploads/1/3/4/8/134887388/2d7fde761cd2b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385634/normal_5fd63b46da316.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412415/normal_6006b00a214ec.pdfIn PDF document text
    • https://nedovewa.weebly.com/uploads/1/3/5/3/135316636/8588233.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459165/normal_600d2d06c175a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444622/normal_60144c14843fb.pdfIn PDF document text
    • https://cdn.sqhk.co/zopinulepa/iif1hbb/53522300837.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384480/normal_5ff4379ee4edc.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_off0000e2f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2F4 5348 bytes
SHA-256: 73e57857cad9af565bda34e15214c9ef81f94f1b02d70c34876b9ddaeca7dd43
font_01_sfnt_off0000f509.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF509 12200 bytes
SHA-256: ea86add69792d2798aa3f6c0c62909843bfc1444797635e691a7b537ca7dc2ba