Malicious PDF — malware analysis report

Static analysis result for SHA-256 4eee1a10a96a5758…

MALICIOUS

PDF

39.4 KB Created: 2020-08-19 21:22:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 10666d56d95f18d831bdc7d5b6cb9378 SHA-1: 13e5d09810136b9772e9200c8787214e526f8305 SHA-256: 4eee1a10a96a57586f1d266faa6efdc6c3a9e08273610b8b94a3bfecbe69079f
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific redirector URL, indicating a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious. The primary malicious URL is https://ttraff.cc/pify?keyword=free+time+activities+worksheets+for+adults, which is likely used to redirect users to further malicious 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.cc/pify?keyword=free+time+activities+worksheets+for+adults In PDF document text
    • http://meselunig.pha-len.com/uploads/1/3/0/8/130814328/8281f47c34f2d7.pdfIn PDF document text
    • http://files.herbkauderer.com/uploads/1/3/1/8/131857152/98f8466.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/1/0437/8063/6833/files/15501836828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5007/3240/files/katy_perry_road_mp3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9947/8434/files/toshiba_recovery_wizard.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9813/5966/files/16570098491.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1355/3827/files/stewart_redlin_watson_precalculus_7th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5036/0232/files/89809229335.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8015/5290/files/wimivuri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7618/2426/files/78745836649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0004/4454/files/15694170370.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4248/7972/files/clip_dj_free_download_mp3_mp4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1865/7697/files/77693186095.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4609/2443/files/dolizejoxitadonemaguvir.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_off00005c17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C17 5432 bytes
SHA-256: a59eb6eb550bb021fb0ba9f1ca0343c5b93ae4e0f1f172903f0938f48bcc3b64
font_01_sfnt_off00006e7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E7C 9956 bytes
SHA-256: f999d3508141a819214915fc3e66c952c04aefdc8ded93005936fd7e080494b4

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