MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links, many of which point to a redirector service (ttraff.ru) known for malicious activity. The document body, though heavily obfuscated, also contains this redirector URL and other URLs pointing to what appear to be download sites, suggesting a phishing or scam attempt. The ML classifier strongly indicated maliciousness, supporting the presence of a malicious redirector and link farm.
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=biodegradabilidad+definicion+pdf In PDF document text
- http://wepoloki.healthkeeperz.com/uploads/1/3/1/3/131384424/6106220.pdfIn PDF document text
- http://files.catherinehoodillustration.com/uploads/1/3/2/6/132682134/634499.pdfIn PDF document text
- http://files.stjames-ri.org/uploads/1/3/1/4/131453969/dawelajopeze.pdfIn PDF document text
- http://nexelege.concordiavocal.com/uploads/1/3/1/4/131437462/daf8c87.pdfIn PDF document text
- http://files.thetipsyredfox.com/uploads/1/3/1/3/131381231/9460849.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/1/0433/9436/7649/files/hp_m401n_drivers.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3823/6062/files/71416011219.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/8575/6568/files/78764899582.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/4147/9066/files/21482288622.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/4777/8469/files/kenneth_rosen_discrete_mathematics.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7194/6398/files/novusaretikoxasogina.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6997/2384/files/78888823034.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4691/9579/files/87052928651.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/7108/5475/files/que_es_musica_clasica.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6799/8362/files/26408974119.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0448/1312/3744/files/brecht_galileu_galilei.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8732/2522/files/38621002443.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9005/9176/files/wamajonikivirolitowibi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7124/2389/files/pawuxuboramowo.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000644f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x644F | 5044 bytes |
SHA-256: 9377420ac963bf07559d941523781796329585b249b3d04a9d7590b18bb69d82 |
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font_01_sfnt_off00007574.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7574 | 14292 bytes |
SHA-256: d2ebb70b98e1beae7adfb554dcc23e60a8a0e63396b38d8698d020392f8075cc |
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font_02_sfnt_off0000a173.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA173 | 4324 bytes |
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3 |
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