Malicious PDF — malware analysis report

Static analysis result for SHA-256 11e16545d2b785a4…

MALICIOUS

PDF

39.3 KB Created: 2020-08-16 21:06:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1cc6cb23f276bdc0e80d80c1ec4e5982 SHA-1: bd0bc61a027c8ac0d863abbe2600f7db0755ea0a SHA-256: 11e16545d2b785a4b4562bd0cba918359795767d287f1ed2f419c0c668c7395d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to Shopify domains hosting PDF files, but one critical link redirects through ttraff.com, identified as a malicious redirector. This suggests a phishing or scam attempt using a lure of educational material to drive traffic to malicious infrastructure. The ML classifier also strongly indicated maliciousness.

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.com/pify?keyword=best+english+language+gcse+revision+guide In PDF document text
    • http://files.tmoonphotography.com/uploads/1/3/0/7/130776655/ratepu.pdfIn PDF document text
    • http://kugeba.wanawari.org/uploads/1/3/2/6/132681812/11213e75e.pdfIn PDF document text
    • http://zuxuse.bunsandbites.com/uploads/1/3/1/3/131398020/3813930.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/1/0436/5392/2981/files/xuzof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5806/0703/files/google_docs_alphabetize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1356/0731/files/samame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4610/9345/files/gepoxefaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6643/3435/files/jamosifepifigofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9117/9160/files/vavitivikitog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5630/8123/files/85380391292.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4523/1519/files/lee_sin_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1466/7934/files/14820390667.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1315/2673/files/xazejotiloko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9766/1348/files/dilbert_mission_statement_generator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xakikalimakimoxe.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_off00005d1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D1E 5308 bytes
SHA-256: 53b220ef2c29144b125f8ec42261c3e1105452401433681e9c2f7664d288c250
font_01_sfnt_off00006f21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F21 9752 bytes
SHA-256: ec2b9adecefa6dff64514f8f4d28f57758a1ebbf9d6f19f01e6b3397dde68ade

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