Malicious PDF — malware analysis report

Static analysis result for SHA-256 780bd3b769673825…

MALICIOUS

PDF

48.1 KB Created: 2020-08-09 03:48:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8d12b85459c9f59113e4343ad21afa9c SHA-1: b24dc3ab9e95099e721de0d4fc0713904053dfd8 SHA-256: 780bd3b769673825ef9a906e39cd2e2fa41d4c2160b655a4c97f049ccc7350a3
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service designed to obscure the final destination. The primary redirector URL is https://ttraff.com/pify?keyword=creative+problem+solving+in+school+mathematics+pdf+download, which is likely part of a phishing or scam campaign. The ML classifier strongly indicates maliciousness, and the presence of a link farm suggests an attempt 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.com/pify?keyword=creative+problem+solving+in+school+mathematics+pdf+download In PDF document text
    • http://jarolud.peopleschurchtruro.com/uploads/1/3/0/7/130776485/zulirizojin_vatodanupu.pdfIn PDF document text
    • http://files.nhbirth.com/uploads/1/3/1/4/131408798/6045894.pdfIn PDF document text
    • http://files.feszty.com/uploads/1/3/1/3/131379615/piletuxelebow-mosatutizoke.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/1/0429/9092/8026/files/65841698022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5385/0528/files/48134000241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8250/6647/files/68753016905.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1512/7708/files/papirulukejawukegomipomu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/enchiridion_epictetus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8275/2935/files/rebibugix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5589/6990/files/70224890477.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7930/1275/files/risutopapew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2421/1354/files/76313730629.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4171/0499/files/past_simple_and_present_continuous_exercises_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0749/8647/files/www_wwwdotcom_com.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 1

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_off00006ee0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE0 5672 bytes
SHA-256: afd719e97d122b6cd0f948bb71389772684bc05b2afb8b89ee8f8813a14d0a1a
font_01_sfnt_off00008208.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8208 10228 bytes
SHA-256: 7c93ce903b20d31461dc006e9445d4ddcd7966ad77775a0b4c24ce56c0d9c0b1
font_02_sfnt_off0000a4fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4FB 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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