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 pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.cc. This suggests the document is part of a link farm or SEO poisoning campaign designed to lure users to malicious infrastructure. The primary malicious URL is https://ttraff.cc/pify?keyword=zhang+bounded+gaps+between+primes+pdf.
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.cc/pify?keyword=zhang+bounded+gaps+between+primes+pdf In PDF document text
- http://files.houstonbottledwater.com/uploads/1/3/0/9/130968950/pawipimig-vegiv-sukok-selalix.pdfIn PDF document text
- http://files.fionacompton.com/uploads/1/3/2/6/132681824/tulotezeniramo_wobalefadan.pdfIn PDF document text
- http://files.neubacher.vafercapital.com/uploads/1/3/1/3/131383284/580442.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/1/0438/8637/9160/files/91291398522.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2143/4023/files/14356502710.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2544/0669/files/wofomugukinuvurori.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/5288/3352/files/mumefilopizu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/parisibudipaxetiwori.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/3291/0751/files/72735696488.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7291/2549/files/29427567487.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/2103/1832/files/35195001757.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5647/1959/files/25724738500.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7966/3765/files/86829677148.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_off00006413.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6413 | 5496 bytes |
SHA-256: 2120e061286f6847194a77f5faf915109d730e5dfe7290553a6017bfce34888c |
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font_01_sfnt_off000076a5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x76A5 | 16040 bytes |
SHA-256: 39b78b9d96fd4c55f8fa20550ab8d844b70443a90c390f3123ef92ae442876e9 |
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font_02_sfnt_off0000aa97.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAA97 | 16236 bytes |
SHA-256: 54c7454e0e37581c45996c00fec06e5e014cecb1b2e003ccf0ba466df70b3344 |
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font_03_sfnt_off0000bff5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBFF5 | 4324 bytes |
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3 |
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