MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a significant number of embedded links, with a heuristic identifying it as a PDF link farm. One of the embedded URLs, 'https://ttraff.ru/pify?keyword=integrals+of+inverse+trigonometric+functions+pdf', is flagged as a known malicious redirector. The majority of the links point to Shopify domains, suggesting an attempt to obscure the true destination or leverage a seemingly benign platform for distribution. The ML classifier also strongly indicated maliciousness.
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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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=integrals+of+inverse+trigonometric+functions+pdf In PDF document text
- http://files.sincerelyemma.com/uploads/1/3/1/4/131438260/1367250.pdfIn PDF document text
- http://files.loyalwillcaninehydrotherapycentre.co.uk/uploads/1/3/1/4/131437074/pejegedes_revodapopateru_gakano.pdfIn PDF document text
- http://files.vickiaskew.com/uploads/1/3/1/4/131438427/0d9607.pdfIn PDF document text
- http://files.acetravelsagency.com/uploads/1/3/1/3/131380171/4b8a167.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/1/0438/8493/7384/files/kivaximifap.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1608/5923/files/95150952463.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kikurum.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5834/8700/files/pibilakifirazavaded.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/0905/4619/files/44442169108.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4040/6684/files/18838657784.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/3078/8758/files/belurazijijemomu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9951/2231/files/sunovavulidukoxopirowu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/2981/5705/files/58163204753.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5857/7046/files/wepalegubenapuzagaxakifin.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_off00006a5a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6A5A | 5356 bytes |
SHA-256: 217c4cbbc4fce898873d105da5bebdabb33dde41e7c698393ef746e4c57b6cd0 |
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font_01_sfnt_off00007c77.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7C77 | 13372 bytes |
SHA-256: 39973a98d73a4c470edde372f6bd3db15583c229b85fc3b2efcb3a41836fd437 |
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