MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded links, many pointing to Shopify domains, suggesting a link farm or SEO spam operation. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/wb?keyword=singer%204423%20service%20manual%20pdf', which is likely the primary malicious objective. The ML classifier also strongly indicated maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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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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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/wb?keyword=singer%204423%20service%20manual%20pdf
- http://files.tetzlaffmusic.org/uploads/1/3/0/7/130739430/gelotuzizukuz.pdf
- http://files.aprilsandersphd.com/uploads/1/3/1/4/131407705/somoj-pixinodi-jefalazufog.pdf
- http://files.faroutfirstaid.com/uploads/1/3/1/6/131637308/rudenobif-dikexowav-vireguwuwidis-nebedot.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0434/0085/5706/files/gokomikegiratodujem.pdf
- https://cdn.shopify.com/s/files/1/0429/6556/5589/files/sofaxopudotagobutobute.pdf
- https://cdn.shopify.com/s/files/1/0430/6193/6285/files/benchmarking_techniques.pdf
- https://cdn.shopify.com/s/files/1/0433/7188/8803/files/surujugipujavi.pdf
- https://cdn.shopify.com/s/files/1/0430/0269/1743/files/livarofexudobapavowif.pdf
- https://cdn.shopify.com/s/files/1/0437/7542/6721/files/48537334532.pdf
- https://cdn.shopify.com/s/files/1/0431/6728/5410/files/60846734558.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/17232613021.pdf
- https://cdn.shopify.com/s/files/1/0430/9814/4932/files/feleluzunoxabutexizejo.pdf
- https://cdn.shopify.com/s/files/1/0431/3320/6682/files/90383487178.pdf
- https://cdn.shopify.com/s/files/1/0440/6788/1125/files/xupogakasimus.pdf
- https://cdn.shopify.com/s/files/1/0431/9005/9157/files/najugal.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005103.bin621ee98aa093dc2f2a277192eedfa90d49159b51b9b5a8ecc6028fb49a79b16b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5103 | 6024 bytes |
font_01_sfnt_off00006580.bin8bc4766689d4ba5af209e1da0f1d50b0fd04b3074b1fd71c6edcbf99a99bbb2a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6580 | 13956 bytes |
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