MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=call+recording+app++uptodown', is designed to lure users to malicious infrastructure. The document also features a large number of embedded links to PDFs hosted on Shopify, indicating a link farm strategy, likely for SEO poisoning or to obscure the final malicious destination. The ML classifier strongly supports the malicious nature of this PDF.
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.cc/pify?keyword=call+recording+app++uptodown
- http://files.thirdcoastdiscs.com/uploads/1/3/1/0/131070674/fivopusaximowow.pdf
- https://cdn.shopify.com/s/files/1/0446/3896/1827/files/jutujidemuposowizaniki.pdf
- https://cdn.shopify.com/s/files/1/0430/9870/1977/files/kududuvonirijivaniza.pdf
- https://cdn.shopify.com/s/files/1/0430/1121/1425/files/70925401136.pdf
- https://cdn.shopify.com/s/files/1/0434/0065/9100/files/template_powerpoint_2016_free.pdf
- https://cdn.shopify.com/s/files/1/0436/4884/3929/files/garikupizobup.pdf
- https://cdn.shopify.com/s/files/1/0427/9762/9596/files/86880643126.pdf
- https://cdn.shopify.com/s/files/1/0430/6275/5490/files/98644194901.pdf
- https://cdn.shopify.com/s/files/1/0436/5513/5390/files/60935629451.pdf
- https://cdn.shopify.com/s/files/1/0433/1234/9334/files/50285476884.pdf
- https://cdn.shopify.com/s/files/1/0436/8157/9161/files/dezoxodibolebikoxobat.pdf
- https://cdn.shopify.com/s/files/1/0436/7283/0105/files/54212818166.pdf
- https://cdn.shopify.com/s/files/1/0433/2558/7609/files/teteritamazixoliguju.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/
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000044b0.bin6384c3d53111ed2940a133cd8dfae3664784da0d2caa8aeb79426e70d11bda45 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x44B0 | 5060 bytes |
font_01_sfnt_off000055fe.bin7a7cb2ffca1a19cea34a171ffe7ae6ba67ae26bd3ad347225c2b897be616d0f2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x55FE | 9336 bytes |
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