MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF document contains numerous links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body and embedded links suggest a lure for free downloads, likely leading to a phishing or malware download site. The ML classifier also strongly indicated maliciousness.
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=acute+pyelonephritis+in+adults+nejm+pdf In PDF document text
- http://files.atlanticbooking.com/uploads/1/3/0/9/130969354/jerusazupemanip.pdfIn PDF document text
- http://files.stj500westernus.com/uploads/1/3/1/3/131398292/e8ca0.pdfIn PDF document text
- http://files.freeheartclinic.com/uploads/1/3/0/7/130775744/49298f83004c00.pdfIn PDF document text
- http://files.pelletgrillcentral.com/uploads/1/3/0/9/130968921/vapenavided.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0434/1966/4540/files/pivomo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/4302/7106/files/kusag.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9363/8816/files/vozokinejamuvolamituw.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65621046881.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/6795/5610/files/pukomufuduxoretatumiwe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vuwizesovipijekugufex.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1013/8017/files/90896405990.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/9231/9138/files/41563236311.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/0962/2687/files/jocuri_cu_m_asini.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jomanumono.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6491/8165/files/51146664547.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9076/3175/files/35156612932.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/4294/7750/files/nerobetejapikowevapi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/2814/3510/files/petariwid.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00008517.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8517 | 5444 bytes |
SHA-256: 7fd6fb755c9781fa7bbbac25ffb686a060ea4ad60f5242e4e7eeeb9508e431f1 |
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font_01_sfnt_off00009773.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9773 | 12728 bytes |
SHA-256: f35df4226923b088c36b22651a9e5e7d250311ada2c5a30eea63773d92576a43 |
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font_02_sfnt_off0000c08c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC08C | 16112 bytes |
SHA-256: 8edcde2a779730aee73c6d95060464c84d09ca400b50e41eb9b98ab64dbef0fd |
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font_03_sfnt_off0000d560.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD560 | 4324 bytes |
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176 |
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