Malicious PDF — malware analysis report

Static analysis result for SHA-256 eebc88f736de3f50…

MALICIOUS

PDF

37.0 KB Created: 2020-08-17 09:04:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 083500e8af20cecf4350dd9a21f5342d SHA-1: 3e5fefdc184348a268b948cf4285127d0457798b SHA-256: eebc88f736de3f50d6d6cc688b6d8c9def4b6d74e3c7da270a9e18f658bbe03a
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a critical heuristic identifying it as a malicious redirector link farm. The primary malicious URL, https://ttraff.cc/pify?keyword=velocity+and+acceleration+worksheet+2, is designed to redirect users to further malicious content. The document body, though heavily obfuscated, contains references to educational topics, suggesting a lure to disguise the malicious intent of redirecting users to potentially harmful websites.

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.cc/pify?keyword=velocity+and+acceleration+worksheet+2 In PDF document text
    • http://files.nutritionbylaurann.com/uploads/1/3/1/4/131453031/fukike.pdfIn PDF document text
    • http://files.3sixtyinc.com/uploads/1/3/2/6/132681885/lewexafele.pdfIn PDF document text
    • http://files.foxhatnomads.com/uploads/1/3/1/4/131453919/rupexojeke-vuxudatabo-xesenugo.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/1/0430/9018/2297/files/getixasodoropozojasogijo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7402/5640/files/learn_basics_of_java.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2449/8333/files/34727153675.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8293/8520/files/project_summary_template_doc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/1550/6853/files/25360203758.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0296/5665/files/working_on_projects_in_github.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7146/3831/files/33065465584.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8678/2369/files/dukolemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7220/9574/files/99937142619.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5706/9721/files/47866848844.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 5

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_off000051d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51D4 5380 bytes
SHA-256: 9cb18608b300464f34f392544ec854bdef4466d9d2fe0423021da61b957ede28
font_01_sfnt_off00006430.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6430 10312 bytes
SHA-256: 6f2bed36c2c8bb5f46577486e03b97369ba652cb383faf4e1461afc2bfb5459f

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