Malicious PDF — malware analysis report

Static analysis result for SHA-256 69a53f8650a60072…

MALICIOUS

PDF

64.4 KB Created: 2021-02-25 12:23:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 45dc02687be42f1460f4bc5313edeaa7 SHA-1: 459006ba2a0ad50cdddaf4be060564789ab38424 SHA-256: 69a53f8650a60072b36bed221dd7f7db901c0c486024df6c2b88c8c56baf1e1d
196 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
  • 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/123?utm_term=intuos+pro+pth-651+pen PDF link annotation
    • https://cdn.sqhk.co/xewumoxu/hijbiid/21344912727.pdfIn PDF document text
    • https://cdn.sqhk.co/fobonelaga/a6tkoqs/najegaj.pdfIn PDF document text
    • https://cdn.sqhk.co/baluwofuk/ujfgj2s/64648790761.pdfIn PDF document text
    • https://cdn.sqhk.co/rijomawonuj/xvhc8jd/samsung_family_hub_refrigerator_reviews.pdfIn PDF document text
    • https://polabobaxadujo.weebly.com/uploads/1/3/4/7/134775235/a929ab.pdfIn PDF document text
    • https://cdn.sqhk.co/tejilunuf/hhxigv6/diwuwakaxoxerogenolomedi.pdfIn PDF document text
    • https://cdn.sqhk.co/xalurubizud/haheiiN/stickers_among_us_whatsapp_ita.pdfIn PDF document text
    • https://cdn.sqhk.co/xipepovivik/jjgsmAJ/xoxurek.pdfIn PDF document text
    • https://cdn.sqhk.co/datisafapuv/UkiI4j5/tanuwijixamatizijimudo.pdfIn PDF document text
    • https://cdn.sqhk.co/tezabulaw/adUugeH/music_craft_ideas_for_toddlers.pdfIn PDF document text
    • https://vigodabazo.weebly.com/uploads/1/3/4/8/134872933/dosokobekij.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393019/normal_5ff6add2bb012.pdfIn PDF document text
    • https://cdn.sqhk.co/ragejeli/jgCgfRq/ps4_remote_play_mac_lag.pdfIn PDF document text
    • https://cdn.sqhk.co/mezigiduze/G7jeThh/76305736541.pdfIn PDF document text
    • https://cdn.sqhk.co/bitaxukezor/359haJY/wolf_launcher_android_tv_apk.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_off0000c149.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC149 4964 bytes
SHA-256: bffc89bc5d79ffc90300fb74e4fa6bd80a47d09530b6c9b695bf92658b7db072
font_01_sfnt_off0000d23b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD23B 10128 bytes
SHA-256: d499d41078e553d3c34fab888e87a8cc758161df9335506efb116a81136f51a0