Malicious PDF — malware analysis report

Static analysis result for SHA-256 0de362f67edee621…

MALICIOUS

PDF

62.3 KB Created: 2020-08-19 02:08:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bc8600c357c3d770e4d0126473dadc85 SHA-1: 25a8b2e7defde89c47f44c57b1f8c0ba99c8c601 SHA-256: 0de362f67edee621abb74456756385734e5f967f2884b1cd2c20cfb3fdb8acb6
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically a URL designed to lure users with a 'Java online quiz with answers'. The presence of numerous external links, many pointing to benign Shopify URLs but some to unknown or malicious ones, suggests a link farm or SEO manipulation tactic. The ML classifier strongly indicates maliciousness, and the overall structure points to a phishing or scam attempt.

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=java+online+quiz+with+answers In PDF document text
    • http://files.foothillsrh.org/uploads/1/3/0/8/130874058/4256746.pdfIn PDF document text
    • http://files.thehighground.shop/uploads/1/3/1/3/131379253/4932646.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/1/0431/0863/0681/files/ps2_action_replay.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6331/9445/files/32921527912.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/6225/9865/files/vokiganujukijot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1070/1981/files/vomorawenaduxag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9654/7230/files/11696111547.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7580/6119/files/xosodorujanis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1720/6946/files/tejemusizapew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6478/6086/files/pamoserusetosewuxozekuzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3987/3429/files/faded_zhu_mp3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0346/9221/files/wulenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9309/8660/files/57289922774.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5596/4569/files/forukod.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 4

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_off0000b092.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB092 5088 bytes
SHA-256: 619bf726d367b4c017c1fef38d77c044a6c4d472699d0865bec235e6c556e073
font_01_sfnt_off0000c1f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1F8 13152 bytes
SHA-256: 1c38b670a551118d44189aee212834315658e293b38596d1240cf30b30867fef

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