Malicious PDF — malware analysis report

Static analysis result for SHA-256 10254c77afa33846…

MALICIOUS

PDF

48.2 KB Created: 2020-08-19 17:07:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0f3ab1d7993554af9417c4c8f058ce6c SHA-1: b45a08d8ab86cd869b0da09e9dd6486bd680f6f5 SHA-256: 10254c77afa33846522dbbd74aa4253d159cb97c914b938b17961b1cd6e8da94
194 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, many of which point to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that leads to a redirector, which in turn likely directs users to malicious content or phishing pages. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.ru/pify?keyword=amapiano+videos+dance In PDF document text
    • http://files.norwoodhighschool.net/uploads/1/3/0/8/130814856/ec33ef02639.pdfIn PDF document text
    • http://files.maria-cipriano.com/uploads/1/3/2/8/132814306/kuviwupapemad.pdfIn PDF document text
    • http://files.school.stmaryspontiac.org/uploads/1/3/0/7/130775249/pawapa.pdfIn PDF document text
    • http://files.tekkpest.com/uploads/1/3/0/7/130775347/77d4cb.pdfIn PDF document text
    • http://zopefaz.operation-imprezza.org/uploads/1/3/1/4/131483167/2788552.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8171/8173/files/vonowokorinovuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7258/4861/files/1620750443.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/7723/2790/files/metal_gear_solid_1_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3820/2273/files/acknowledgement_form_renovation_hdb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6166/files/penolasapanabarinujipemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1823/1709/files/77746484861.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6021/3398/files/relipupivupekujajoguvez.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 5

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

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A35 4848 bytes
SHA-256: c7719d43177d33c15d296307678e9579e547e84bbd7657b352d03e592d98ba0f
font_01_sfnt_off00005a88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A88 4224 bytes
SHA-256: 5980ce8bcedb6f312b20b0293fbcd94d4166735aa182895ff19ed6531cfc140f
font_02_sfnt_off000069c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69C3 10784 bytes
SHA-256: b4bb80ec3382135305ff17e95c0f4c4d144e1f7f5141cd1e3f1dab5c37cb48f7
font_03_sfnt_off00008ecb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ECB 16676 bytes
SHA-256: efd807f9f0fb1b51ce00766e2a66ac9ad65c7f97a9905ca35c75225664bfe32c
font_04_sfnt_off0000a551.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA551 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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