Malicious PDF — malware analysis report

Static analysis result for SHA-256 63bd18de1c875e01…

MALICIOUS

PDF

71.4 KB Created: 2021-02-20 06:12:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3f786a089d527fadd1a2cd6998c17d87 SHA-1: 2295c6e14d23ea1892ef943eeccc1a04fb80ea31 SHA-256: 63bd18de1c875e017b39fd7f744c9b8c85816979738775db4f1b82fc53d8aecb
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/wb?keyword=hp%208620%20printhead%20replacement%20cost PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4380691/normal_5ff57c6c23c59.pdfIn PDF document text
    • http://hesap-al-sat.com/goldfish_collection_mod_apk_downloaddujoo.pdfIn PDF document text
    • http://muxadar.22web.org/sutivoponom.pdfIn PDF document text
    • http://reduslim-shop.site/7832883169gauup.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466675/normal_600824a239cf7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502563/normal_5fd3350e42aba.pdfIn PDF document text
    • https://puxezemugip.weebly.com/uploads/1/3/4/3/134311794/245075.pdfIn PDF document text
    • http://forsage.pw/kafopetosudusv4km.pdfIn PDF document text
    • http://idealica-itufficiale.website/fceux_nes_emulator7wq9u.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/wetowuzuxit/32684648202.pdfIn PDF document text
    • https://s3.amazonaws.com/mosezavor/vetakojenilijegiwusutomex.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/88469544470.pdfIn PDF document text
    • http://kuronodufanox.epizy.com/almond_flour_pancakes_nutritional_information.pdfIn PDF document text
    • https://s3.amazonaws.com/mejobu/video_er_online_url.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/28644042195.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_off0000d8ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8EE 5896 bytes
SHA-256: 2e0be61771b6f0e7ec524c7f2a8d5d2ff1c4c984c956adda62914a341f76fb00
font_01_sfnt_off0000ecd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD1 10592 bytes
SHA-256: 4429ecebebc27346b55a1d89587c32f90b716d0c28eeec214629791e0b9ecd2d