Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff4e9c8f96ce6b29…

MALICIOUS

PDF

40.7 KB Created: 2020-08-22 00:07:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dc356a2d653cada02b55cac1cff543bd SHA-1: 2d9024b3c6dc303442c7445cf4cdee5e9cd84258 SHA-256: ff4e9c8f96ce6b29473679fe2e50012e5f47f83568aa2c6bf012818de86239a4
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.ru/pify?keyword=ararira+springs+school+uniform', appears to be part of a link farm designed to direct users to malicious content. The document also contains numerous other links, many pointing to Shopify, suggesting an attempt to obscure the malicious destination. The ML classifier strongly flagged this PDF as malicious.

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=ararira+springs+school+uniform In PDF document text
    • http://files.mimodelinginstruction.org/uploads/1/3/2/3/132303175/rarasesoxegunif.pdfIn PDF document text
    • http://kedawu.desertliliesbazaar.com/uploads/1/3/2/8/132814930/bevixekimabaji.pdfIn PDF document text
    • http://files.eastcoastcakeco.com.au/uploads/1/3/1/4/131437378/3a35521a0c4.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/1/0437/5383/2609/files/event_wristbands_mockup_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9138/5758/files/zisisada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1916/6119/files/luburiboveko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/vekidadimoxibaruz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6970/2306/files/fivelufe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/3092/5727/files/square_numbers_from_1_to_100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6663/0050/files/16975820771.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6125/6096/files/xeniguxonovez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/4470/5180/files/sqlite_browser_windows.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7572/1629/files/95456478222.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4250/3832/files/35052139753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51439980706.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD3 5420 bytes
SHA-256: 9281e6674e96c480049c55af260d6ed3c3efcdff35cbef83b0fa8596da8d3d83
font_01_sfnt_off00007212.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7212 10752 bytes
SHA-256: 5a33a31cb699a5811bc34f4c2a7dccce8d6f9061ce401b6aa335ec0a1577ca08

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