Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb6408633d280ea5…

MALICIOUS

PDF

35.8 KB Created: 2020-08-02 04:25:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c9bc7fabcae94c5cbd47a6dd0f5b339b SHA-1: fb7d4e7eb747eaff535c4d0912433b50c9826ee2 SHA-256: fb6408633d280ea53c1efae1e8141c354bb9fc9753ef1ddacfd98b68b9890058
202 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=chief+keef+colors+download', which is flagged as a malicious redirector. The presence of numerous other links, many pointing to Shopify domains hosting PDF files, suggests a link farm or a method to obscure the ultimate malicious destination. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=chief+keef+colors+download In PDF document text
    • http://files.marinmusicals.org/uploads/1/3/2/7/132710603/3652322.pdfIn PDF document text
    • http://files.wabanaflowers.com/uploads/1/3/1/6/131636987/jadusuriwov_zonolu_vitetuviwa.pdfIn PDF document text
    • http://files.personalcheftony.com/uploads/1/3/0/7/130739621/piraxu.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/1/0437/5294/7863/files/50073533422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4462/5822/files/53855660060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9013/1609/files/1778150756.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0762/2824/files/vuvot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7449/4369/files/defuvawax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2250/8447/files/52078136396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/1334164548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6418/8312/files/furikaxirerufol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2045/1997/files/laxuxiwexovumadumude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4273/4237/files/81553952085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9733/3668/files/kavudorevozakazemuxuzowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/23358802883.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 6

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_off00004c7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C7C 5168 bytes
SHA-256: 90122c3f5a96e4e1436c51ca2d35c038662d7681f89386ca84b4f0d5b92162db
font_01_sfnt_off00005e1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E1D 10816 bytes
SHA-256: d11c03273318680457302d28f274ec43990a341f60ff58754b0e3bf89291ee87

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