Malicious PDF — malware analysis report

Static analysis result for SHA-256 824b753f6b48d4cb…

MALICIOUS

PDF

158.7 KB Created: 2020-08-02 22:13:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e4882709960d4e687cabdd1dfc94d51c SHA-1: ba7f6d7daa233bcc81b152c8367de517c2ab8cbb SHA-256: 824b753f6b48d4cb8cd8c11974fb4f0887cd6d31629166e8e08fdca6e7a6b98a
134 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'fire emblem warriors guide'. The ML classifier also strongly indicated maliciousness. The primary IOC is the redirector URL used in the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • 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.com/pify?keyword=fire+emblem+warriors+guide In PDF document text
    • http://files.thunderbaytheatre.com/uploads/1/3/0/7/130775679/9f467156.pdfIn PDF document text
    • http://files.arborassociateshub.com/uploads/1/3/1/4/131453333/5139352.pdfIn PDF document text
    • http://files.chefmaggiesfoodfest.com/uploads/1/3/1/6/131606630/suniboluri.pdfIn PDF document text
    • http://files.musicteachers.london/uploads/1/3/2/3/132302787/rilisoxezarasis.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/1/0428/0962/2687/files/vajorojefepeda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1753/4629/files/24064272183.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5625/1555/files/ronidutakugoruxoxew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6116/4697/files/90507024563.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xirapekewovefosisukepeja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4061/1226/files/33066584472.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6139/5102/files/90273714155.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8246/4928/files/33739644294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4742/6975/files/38328252275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4666/4349/files/26230781849.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9778/3458/files/71141646720.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6635/8934/files/96340549711.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_off00022d4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22D4A 5332 bytes
SHA-256: be48bf445f2889a97f233725147ffacefc766bd9ae0db9ff34dcf3131a34244f
font_01_sfnt_off00023f5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23F5F 14460 bytes
SHA-256: fe125a971cfc83cf086ffab43632a1bff8c136ef0a15c99f265ae9cfd38c5cb8

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