Malicious PDF — malware analysis report

Static analysis result for SHA-256 324285a679498e4a…

MALICIOUS

PDF

60.6 KB Created: 2021-02-19 07:36:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9aefb4768eca34cbf4487125d9595659 SHA-1: 025290f699d68bf26d4082c144637bffae5be404 SHA-256: 324285a679498e4a350e933adc64fc58eecbceaafdde16fcec736982ad7fab3c
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jottigo.ru/wix?keyword=territory+war+unblocked PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4370097/normal_5fc759bcd0210.pdfIn PDF document text
    • https://cdn.sqhk.co/xuvisisitinu/3zHibid/84938804586.pdfIn PDF document text
    • https://cdn.sqhk.co/tatidukigag/hhejchh/ballet_classes_for_adults_beginners_nyc.pdfIn PDF document text
    • https://cdn.sqhk.co/fimegasaz/LiirigZ/puforijajidod.pdfIn PDF document text
    • https://zixojubagever.weebly.com/uploads/1/3/4/6/134613499/sewepasopupejazivib.pdfIn PDF document text
    • https://cdn.sqhk.co/geroterunetu/cJjjVjj/oasis_slide_away_lyrics_miley_cyrus.pdfIn PDF document text
    • https://cdn.sqhk.co/zetuzire/hjcB2hc/11471011732.pdfIn PDF document text
    • https://cdn.sqhk.co/vateviti/Nwje9hf/20266143552.pdfIn PDF document text
    • https://cdn.sqhk.co/kamufegoke/fNgjwji/juicy_fruit_gum_and_moles.pdfIn PDF document text
    • https://cdn.sqhk.co/wuwexosul/vgjg0c8/ben_10_xenodrome_plus_mod_apk_latest_version.pdfIn PDF document text
    • https://cdn.sqhk.co/wofunukasu/Gjajgjj/27291146077.pdfIn PDF document text
    • https://cdn.sqhk.co/kenoramof/giaWAil/2048_doge_unblocked.pdfIn PDF document text
    • https://cdn.sqhk.co/firokizita/bSuiaOO/91805704166.pdfIn PDF document text
    • https://cdn.sqhk.co/jasurisunav/gXBejbF/the_wild_darkness_ruins_of_light_4.pdfIn PDF document text
    • https://cdn.sqhk.co/karadirimose/cNjcigi/bomaputedalafanu.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_off0000b32c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB32C 5100 bytes
SHA-256: bb82f0e476745bb079426469d4142827fba4645fea5132c28292b837d59a02ae
font_01_sfnt_off0000c4ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4AB 9736 bytes
SHA-256: 1783ad8e45755e6c3b9be567e57cbef9ed2532b4d33bf0975c6b655a9fb4def6