Malicious PDF — malware analysis report

Static analysis result for SHA-256 516b3d2730c431a8…

MALICIOUS

PDF

35.0 KB Created: 2020-08-03 07:57:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3a1393bb539f1f49354f735f535a4436 SHA-1: 0219c10e43fb0abe9fdae5ee3c3caac9f02c5d4c SHA-256: 516b3d2730c431a81085a4e0713aa81e509421dd7e7a6c3ffeb8c54081338d3b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure, specifically 'ttraff.ru'. Additionally, it contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or redirection scheme. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the sheer volume of links and the identified malicious redirector strongly suggest a phishing or malware distribution attempt.

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.ru/pify?keyword=the+tempest+robert+w+smith In PDF document text
    • http://lesagof.southfork-studios.com/uploads/1/3/1/4/131452836/2848778.pdfIn PDF document text
    • http://files.fleischerstudios.com/uploads/1/3/1/3/131397964/5548426.pdfIn PDF document text
    • http://files.darbodus.com.au/uploads/1/3/0/8/130815437/divejigajer.pdfIn PDF document text
    • http://files.templetonffa.org/uploads/1/3/0/7/130775400/683f0b4105.pdfIn PDF document text
    • http://files.kaciclairest.com/uploads/1/3/1/4/131437341/9f0644a0b31.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/1/0431/8891/2290/files/60621150746.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5462/0059/files/platinum_disco_mp3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3667/2162/files/68490840155.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1937/0659/files/zalamupepomirufatelowod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5031/1579/files/96647293406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8785/4749/files/50289152826.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6309/1112/files/26454142862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/48299011157.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/13883062786.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7060/3932/files/morewidujarikutemiti.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 8

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_off00004b2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B2D 4996 bytes
SHA-256: 4cd67f64f9e87714eb72f4762b328f8bae4871b1680fec95ac758024307f282b
font_01_sfnt_off00005c09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C09 10284 bytes
SHA-256: 7507591c35f510e2eabcbaa8cf06ffa384982df2b78fcb9e1acf8227e71cf10e

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