Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9c08615943e9f97…

MALICIOUS

PDF

42.9 KB Created: 2020-08-16 00:27:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fa61daf97d0ebd99a76b6fdc932f647c SHA-1: ebcec9f4c71ee500ec5c83215dd18ca403b2a9a2 SHA-256: b9c08615943e9f97efde96f954051151883baa256a483b89d8821b34f84c9fa6
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, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics. The document body, though heavily obfuscated, contains the lure "forge world 8th edition pdf" and the malicious URL. The ML classifier also strongly indicated maliciousness.

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/wb?keyword=forge%20world%208th%20edition%20pdf In PDF document text
    • http://files.kmajda.net/uploads/1/3/1/6/131606331/rofetamiwekokove.pdfIn PDF document text
    • http://files.closeandpaschalauction.com/uploads/1/3/1/3/131383283/9528199.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/1/0431/4945/9605/files/zojixuritaxot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1416/8480/files/55551947298.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4936/1314/files/71404541620.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/88946825235.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/12559133435.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87678197609.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0360/8216/files/sefabafupesumurat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0381/3781/files/pikiretolavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6090/1528/files/92831018405.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3903/8359/files/absorcion_atomica_de_llama.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 5

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C5 5156 bytes
SHA-256: f9c02f688b38a81149b1148d1d6b50463ebe0c7ca188f9ea5dbb455841f48888
font_01_sfnt_off00007360.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7360 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off00007bed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BED 10136 bytes
SHA-256: 339e1e2db2c88bfd1af99f949d73cd5f49a5b47916c35c1b6665f3bfbb40c7a8

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