Malicious PDF — malware analysis report

Static analysis result for SHA-256 767918e60b6e59d1…

MALICIOUS

PDF

37.6 KB Created: 2020-08-24 04:08:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4ffcf73b66793fcf82f8b973f0be7c76 SHA-1: 4f86b466ae8b67a43d675693354196dcb3ce2a26 SHA-256: 767918e60b6e59d1ae608e29160c21bef85f67f487957ed3472f0c9776bdb8ec
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains a URL that is also present in the heuristics, indicating a likely phishing or malware distribution attempt. The presence of numerous external PDF links suggests a link farm designed to manipulate search engine results for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://ttraff.cc/pify?keyword=benim+hocam+e%25C4%259Fitim+bilimleri+ders+notlar%25C4%25B1+pdf In PDF document text
    • http://files.misscurator.com/uploads/1/3/0/9/130969403/lugupe.pdfIn PDF document text
    • http://morel.grandprixdrivingschool.net/uploads/1/3/0/8/130814328/7d6be92776.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2786/3464/files/naruto_clash_of_ninja_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5676/6882/files/nonewarazerate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3551/6318/files/50189059211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8897/7813/files/kuduguzatevomexijemok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zupapinited.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8946/8328/files/43962810272.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4246/4163/files/36146472343.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3796/5979/files/wikomaneva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7562/4355/files/sorepuv.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 3

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_off000050b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50B0 5844 bytes
SHA-256: d791ebe272194aee782d48a3948da2d9d4eee7b510b9f510b06b39d23c562523
font_01_sfnt_off0000645d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x645D 10992 bytes
SHA-256: 4faa7bd8f2cd6f6150d88842737763f5019f4b685fefe39a04d2fd35b3db65ed

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