Malicious PDF — malware analysis report

Static analysis result for SHA-256 87e3606f7105d6ed…

MALICIOUS

PDF

104.3 KB Created: 2020-08-11 16:56:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3212e4cf00a3efc6acdd91db626f2fec SHA-1: d083ef995a2f5fc9c34843cf5d6ff57e24d34b29 SHA-256: 87e3606f7105d6ed97b8e462f219311ead9ccc967b4bfe1c8f28b066661f9cca
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it is a malicious redirector, specifically designed to lead users to a link farm. The primary malicious URL identified is https://ttraff.com/pify?keyword=advanced+language+practice+michael+vince+macmillan+pdf, which is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting the document's purpose is to facilitate this redirection.

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=advanced+language+practice+michael+vince+macmillan+pdf In PDF document text
    • http://files.allsystemsgoltd.com/uploads/1/3/1/4/131454151/d465541d.pdfIn PDF document text
    • http://files.maidonthemoonstainedglass.com/uploads/1/3/1/0/131070572/f50097ff1b06.pdfIn PDF document text
    • http://files.darjanesville.org/uploads/1/3/2/6/132681812/revokadewobo_dexunixalakaz_satapomefawefo_karuve.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/1/0434/5656/1318/files/enlaces_quimicos_primarios_y_secundarios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9330/3204/files/69770420910.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4542/8122/files/78984319063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1641/3607/files/99640010364.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0084/7781/files/55437655052.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1684/6488/files/jenugasapobunemiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vunazazaxukatokezidabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9938/1146/files/bissell_pet_hair_eraser_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7793/5004/files/bijaxetugawibozaratulisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9110/7742/files/7915638730.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7388/8671/files/38816417476.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 2

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_off00015d0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15D0B 5440 bytes
SHA-256: dfcc7db8eead5c92c226bb862615406ab4fa67aac13b1edbae017a7b7e13db88
font_01_sfnt_off00016f6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16F6B 10832 bytes
SHA-256: a41e7c9f8d10d1c339b6fd1d67791e324b5a55dcde1c53b7926728f59782a35a

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