Malicious PDF — malware analysis report

Static analysis result for SHA-256 f457d4177069f850…

MALICIOUS

PDF

43.6 KB Created: 2020-08-14 06:47:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f684d42e3c3e943499ca50c84e1ce09b SHA-1: 4d10f87dfc6a65933b3008f0353166dfc07d3f4f SHA-256: f457d4177069f85032b9a3e897f055b79dec81915eef7b0bf401b38b078c731e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF was flagged as malicious due to a link to a known malicious redirector, ttraff.com. The document body contains obfuscated text and embedded URLs, including the malicious redirector and a link to a Shopify-hosted PDF. The presence of multiple embedded URLs suggests a link farm or a distribution mechanism for further malicious content. The ML classifier also strongly indicated maliciousness.

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=anemia+megaloblastica+pdf+2016 In PDF document text
    • http://files.ilonaaltman.com/uploads/1/3/1/4/131438234/tisasarerar_vetazaradipo.pdfIn PDF document text
    • http://files.keeley-smith.com/uploads/1/3/2/3/132302749/rewilopatere.pdfIn PDF document text
    • http://files.kaiserdanes.com/uploads/1/3/0/7/130776206/garira.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/1/0429/4115/3439/files/python_beginners_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8996/9820/files/pearson_grade_4_math_workbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5564/3809/files/43394689115.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/adhd_screening_tool.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5881/3336/files/figuzoraxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2441/4882/files/nugukoja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8894/5064/files/65423448892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1269/1867/files/13836484719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3957/1616/files/80477975541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1423/4017/files/nowogijefoxazaxex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/91895894664.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B82 5776 bytes
SHA-256: 988c156aaaf1636638a0587bc3b19622afac7a18753101e9cd8ddad3a0e73b49
font_01_sfnt_off00006f14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F14 10180 bytes
SHA-256: 8faed302b929f46da3fb2e8576ba1662e67558f7c0abad5362c61d39a53581fd
font_02_sfnt_off000091fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91FA 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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