MALICIOUS
194
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 Shopify domains, but one critical link redirects to `ttraff.ru`. This domain is flagged as a malicious redirector, likely serving as a lure for users searching for free programming books. The document body, though heavily obfuscated, contains text related to 'programming in ansi c free pdf download' and the `wkhtmltopdf` tool, reinforcing the lure.
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=programming+in+ansi+c+free+pdf+download In PDF document text
- http://files.talltalerabbitry.com/uploads/1/3/0/7/130775978/e3435.pdfIn PDF document text
- http://denanedi.speed4yoursport.com/uploads/1/3/1/0/131070420/nekaja_tilun_sowuretonir.pdfIn PDF document text
- http://nonelimi.livinghopefwc.com/uploads/1/3/2/8/132814930/norodubevokojowa.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/1/0432/8508/6364/files/modajowugivasozuzu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/9050/8960/files/88110473260.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/0451/0887/files/baxuvubezigekigig.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/7505/0395/files/tuxitilonewegelogaj.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6341/0845/files/66284645316.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0441/4029/8392/files/1773395999.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/7400/9753/files/79149270180.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8070/3382/files/25861057477.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/8796/0989/files/least_squares_solution_calculator.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0705/7825/files/14721186133.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9619/5737/files/medical_fitness_certificate_for_engineering_admission.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4575/6821/files/8224015138.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/1086/7871/files/livatag.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5253/0845/files/9675131086.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_off000046fc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x46FC | 5276 bytes |
SHA-256: b80419be36db15b77526bdbe12d9926a09e3416c075611af6a3e26105fce9ddd |
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font_01_sfnt_off000058d5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x58D5 | 9276 bytes |
SHA-256: 8ab56906cc2a3c5216269ab2642b6356f8aad3bef28c2b37e14e0546f373bec3 |
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font_02_sfnt_off00007884.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7884 | 4324 bytes |
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3 |
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