MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.ru) known for malicious activity. The document body itself is heavily obfuscated, but the presence of numerous external links, including a link farm, suggests a lure to external malicious content. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates that the document may be intended to trick users into believing they need a password to access content, a common tactic to bypass security gateways.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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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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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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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=aphidius+sp+pdf In PDF document text
- http://files.ucbclaaofsd.org/uploads/1/3/1/3/131398515/cadc008d8af1.pdfIn PDF document text
- http://files.creswellclubhouse.org/uploads/1/3/1/4/131453194/zelutasuga.pdfIn PDF document text
- http://files.stephethornton.com/uploads/1/3/0/7/130740138/8591014.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/1/0431/6246/8514/files/87988187684.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7742/5565/files/tratamiento_de_residuos_organicos.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8946/1410/files/61433635934.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/4580/6503/files/54546309418.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7395/2158/files/bride_and_groom_trivia.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6766/9654/files/30518013580.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8561/8583/files/73031379814.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6378/7170/files/jilewitalinasavupetoje.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/0559/1200/files/6295084646.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3623/7206/files/finavunajuwapije.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5724/9430/files/30097204518.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/5128/4642/files/76528516659.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8766/7103/files/28464013050.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7399/3890/files/dibitosozi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0538/6657/files/50179849324.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_off00006460.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6460 | 4780 bytes |
SHA-256: d0f908b4d857ebe1cc3113f525ccbe8c5656315625c30e2eb473bfc45bf79ab1 |
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font_01_sfnt_off000074a8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x74A8 | 9860 bytes |
SHA-256: 4165ef3d804b6cbaa6163e6db9dfa756f0453fbb024e789d0b8bfc91548ba311 |
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