Malicious PDF — malware analysis report

Static analysis result for SHA-256 d08a2d12f84e66f2…

MALICIOUS

PDF

41.1 KB Created: 2020-07-30 12:09:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e8bd858c757be0ba62e36976f31e5117 SHA-1: 28a1a827d87b0654818893fe167625960f645ec5 SHA-256: d08a2d12f84e66f2d888a63463f7403f8e3fc7e368cf2ba6e0cc6193bc4e98fc
194 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics indicating malicious redirector links and a link farm. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create SEO spam or redirector pages. The primary malicious IOC is the ttraff.ru URL, which is a known malicious redirector.

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=chiang+mai+tourist+map+pdf In PDF document text
    • http://files.fbccrescentcity.org/uploads/1/3/2/3/132303010/9294618.pdfIn PDF document text
    • http://files.lgproma.com/uploads/1/3/2/6/132681517/forujuwudidakufex.pdfIn PDF document text
    • http://files.rasaddleclublarkhill.com/uploads/1/3/0/8/130874360/wugotani.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/1/0431/9969/2958/files/ludobakisamesufokevapur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6406/5190/files/11956799119.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9511/3374/files/somugeto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2035/2677/files/5872727430.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9972/4703/files/gekev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3264/9636/files/womiwogupadasegenexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7328/1948/files/mabokuripunegilomabebivo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4958/2743/files/sasinesuzubuwumivofatud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4275/8053/files/25214231638.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7194/6398/files/vaziv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8620/9439/files/xukoworirolimozug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3773/6603/files/42312113456.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0958/6846/files/60709634171.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_off00006578.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6578 5208 bytes
SHA-256: d5751f0148d3adb88a202bd64da9b9aaa12e8175c08a17a69525726c9abe9b31
font_01_sfnt_off000076f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76F7 9428 bytes
SHA-256: 7bf28cf6e14d9c4155967aa07990d2ff003f86bb1087e07c6e30c503dfb20a5a

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