Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bb7b4a15ecdef04…

MALICIOUS

PDF

48.7 KB Created: 2020-08-09 06:16:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 27393b067ed2e19afd001278fa030687 SHA-1: 170eb3c083e838ce6e60aa2373f7bb9f08ca79c6 SHA-256: 3bb7b4a15ecdef04a5a7d338dd1fe00859382fdecba90d06632b8749dee56f30
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains embedded links, one of which, https://ttraff.ru/pify?keyword=alternative+dispute+resolution+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and numerous other links to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning tactic. The ML classifier strongly indicated maliciousness, supporting the conclusion that this PDF is designed to redirect users to harmful content.

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=alternative+dispute+resolution+pdf In PDF document text
    • http://files.planahenparty.com/uploads/1/3/1/0/131071290/3956101.pdfIn PDF document text
    • http://files.2425york.com/uploads/1/3/1/3/131379951/nupetuvenabe_litepofu.pdfIn PDF document text
    • http://files.barrvillemc.org/uploads/1/3/0/7/130776118/423244.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/1/0433/8024/4643/files/capital_market_reforms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6286/1730/files/pozab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2729/2582/files/ser_bachiller_preguntas_y_respuestas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0796/5341/files/83815082915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8344/0036/files/fuveg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8833/9354/files/35867692369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8073/6150/files/override_bootstrap_css.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7211/7141/files/dojufodenumugadigido.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5770/8185/files/68504758224.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83260340608.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_off0000812b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x812B 5084 bytes
SHA-256: 810f3792a7fad27055c074072d04203767b15b5e4404fcd50ac593cee5a1a458
font_01_sfnt_off0000928d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x928D 10572 bytes
SHA-256: b55d0a938a9a5c6c0a3926236f6be222ae4f123ada33a5cab53590764386caf5

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