MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO poisoning. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is used to obscure the final malicious destination. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirector, indicating a social engineering lure to trick users into clicking the link. The ML classifier strongly supports the malicious nature of this 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=aashto+lrfd+manual+pdf In PDF document text
- http://files.sunwestsportswear.com/uploads/1/3/1/6/131637546/tanot.pdfIn PDF document text
- http://files.channelreligion.com/uploads/1/3/0/7/130740432/jegeg.pdfIn PDF document text
- http://files.nadiamatar.com/uploads/1/3/1/4/131407005/83bb236969262d8.pdfIn PDF document text
- http://files.stjepanpepiskuric.com/uploads/1/3/0/9/130969075/3af1e5029b9bcc.pdfIn PDF document text
- http://files.johnhayley.com/uploads/1/3/0/8/130874361/bf1e7c28d4ca9f5.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/1/0428/9835/8432/files/viborovikumowenaben.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/judegesuzopo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9476/1877/files/22402651611.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6246/0577/files/92701986994.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89832202682.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/3775/1453/files/old_school_runescape_magic_calculator.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/0100/4707/files/carbon_footprint_calculator.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0107/7142/files/85705611569.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5110/5947/files/dotisezuwukunebi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2228/5976/files/13826889806.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7240/5157/files/84346699955.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4214/3389/files/kamevavojozusip.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_off00004ab0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4AB0 | 4988 bytes |
SHA-256: edcfd0a0e4561d1af59e97b49af8a08ffef922c7b1285d1201a1943036fe5c15 |
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font_01_sfnt_off00005b6e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5B6E | 9848 bytes |
SHA-256: 28ff8bef38e8d48667f0d5a68a6d54f82dc78bf016ee4bacaa58351d8dea601f |
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font_02_sfnt_off00007cdc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7CDC | 4324 bytes |
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34 |
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