Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eedf0666640d419…

MALICIOUS

PDF

68.1 KB Created: 2020-12-15 20:56:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 586517b371950d2070420b3741cbe309 SHA-1: e2979eab44724a6fe580831ab2d6ff47002d9a27 SHA-256: 0eedf0666640d419764b8e4dcc413509c75368b53ea382c60a011332c94468d2
254 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains multiple embedded links pointing to redirectors and a link farm, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though obfuscated, contains metadata related to 'steampunk pocket watch uk', likely used as a lure to entice clicks on the malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/123?utm_term=steampunk+pocket+watch+uk In PDF document text
    • https://cdn-cms.f-static.net/uploads/4443595/normal_5fbf16012f5c2.pdfIn PDF document text
    • https://xujuwoxevosu.weebly.com/uploads/1/3/4/8/134896670/torazunufoxota-gewowa.pdfIn PDF document text
    • https://kuzeloxowew.weebly.com/uploads/1/3/4/3/134330257/fiwokamotegod.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/76a0c083-82f4-4bbc-b226-78c0b57da734/lugufirepopokasixomuzepa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c646dfe0-fc9f-4ff2-9b52-a06aab35b8b1/zuwezivexevamesususowoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2f56564-24b3-4945-b813-6eaf92548fa7/23688098139.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad0fd0cc-99dd-4e83-8a68-8534a5c893fb/70602703395.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43c3123c-1a57-46a3-a840-b448898d24f4/mitosis_phases_worksheet_for_middle_school.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d304dea-1b44-43c8-85ce-14f5934d4da3/wipudurixazuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3f13a62-bcdb-45fc-b606-6cb2bd143859/mionix_naos_7000_dpi.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cdda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDDA 5124 bytes
SHA-256: 361d2a648425ac296bf6d610ddc141f268dcbf0c0d1bc9c20154d39e43f89435
font_01_sfnt_off0000df3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF3E 10788 bytes
SHA-256: b4481e9f810a2436de77e304f038d55379b3ec5b94a23b177eb1edd64f1a95d6

Open this report in the interactive analyzer, or submit your own file for analysis.