MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a large number of embedded links, many of which point to a redirector service known for hosting malicious content. The primary redirector URL is https://ttraff.ru/pify?keyword=si+s%25C3%25A4tze+franz%25C3%25B6sisch+%25C3%25BCbungen+mit+l%25C3%25B6sungen+pdf, which is likely used to obscure the final destination and distribute malware. The document body, though heavily obfuscated, also contains this URL, reinforcing its role in the attack.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF 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.
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall 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.
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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF 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.
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe 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.
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Embedded URL info EMBEDDED_URLOne 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=si+s%25C3%25A4tze+franz%25C3%25B6sisch+%25C3%25BCbungen+mit+l%25C3%25B6sungen+pdf In PDF document text
- http://files.thetaitungteacher.com/uploads/1/3/2/6/132695257/sexixetegaboke_bebevipox_wapab_jezidonidukan.pdfIn PDF document text
- http://files.spaghettiplay.com/uploads/1/3/2/6/132681516/7365523.pdfIn PDF document text
- http://files.keyconceptslearning.com/uploads/1/3/1/1/131164456/xetugofaganeved_lobof_kuwatezev.pdfIn PDF document text
- http://dejawoju.stephanieflear.com/uploads/1/3/0/9/130969352/wuwujuxewovumutagid.pdfIn PDF document text
- http://files.chesapeakeorchestra.org/uploads/1/3/2/3/132303118/1feb61dc7.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/1/0429/9515/5105/files/difference_between_adhesion_and_cohesion.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/6705/7063/files/79215741363.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7977/7945/files/pokemon_emerald_pokemon_locations.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/9448/1823/files/bodarazubopafulo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/4444/5092/files/85893311525.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/parisibudipaxetiwori.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/3651/5221/files/wivena.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9754/7157/files/lavaxagejunozop.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kekesapenogetiru.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6285/2761/files/php_close_tags.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8742/0835/files/bangladesh_bank_previous_job_question.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7523/2153/files/critical_care_nursing_diagnosis_and_management_free.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/4528/2214/files/80961800817.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
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006998.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6998 | 6356 bytes |
SHA-256: fd413fd72d8b840b57f62436571c26df8e81c1b62a577f3c420529c009aaf421 |
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font_01_sfnt_off00007dfc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7DFC | 12604 bytes |
SHA-256: 5859e1d9a1de184407742e9738e1b2644dd2e053e9fb28e26e23e88e2fd1f7c2 |
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