MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link to a known malicious redirector, ttraff.link, which is disguised as a search result for 'clustertruck free mac'. The PDF also contains a large number of links to external PDFs hosted on static.usrfiles.com, suggesting a link farm or SEO poisoning attempt. The ML classifier strongly indicates maliciousness. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.
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.link/wix?keyword=clustertruck+free++mac
- http://mepug.ultimateperu.com/uploads/1/3/1/0/131070387/64292e04.pdf
- http://files.dragonflywoodworks.net/uploads/1/3/1/6/131606011/ffc72.pdf
- https://static.usrfiles.com/ugd/0582e0_2d01c48c280b4c57acaf8f0d3a32fbb3.pdf
- https://static.usrfiles.com/ugd/40512e_5344dbfebe61409bb466e34b805bc0ae.pdf
- https://static.usrfiles.com/ugd/18122d_98d599f395094bc39bc176f9ef81374a.pdf
- https://static.usrfiles.com/ugd/7198c1_a6c7c4549a51497db19e5bb2afe3cade.pdf
- https://static.usrfiles.com/ugd/d3758e_c0b951c1546441e9ace5a67b80e4cd95.pdf
- https://cdn.shopify.com/s/files/1/0432/7853/2758/files/angular_template_variable_from_observable.pdf
- https://cdn.shopify.com/s/files/1/0436/3524/5216/files/tabagiwosuwomovijizoj.pdf
- https://cdn.shopify.com/s/files/1/0433/1572/4456/files/86909075978.pdf
- https://static.usrfiles.com/ugd/efc97f_7bb5036c886c45dc9be73d84a8213ccb.pdf
- https://static.usrfiles.com/ugd/b58d21_f099a01c093b4acb8a1057393adfd92b.pdf
- https://static.usrfiles.com/ugd/5d2cf3_2ff7792e4f1e4d42ad7a94393250ded8.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_off0001d04c.bin093035dbe7d5fcc2a7437c81bde26dbc378d731636e564e63aa31856c4c1b771 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1D04C | 4996 bytes |
font_01_sfnt_off0001e12f.bin17e41f757f53b997393dbc2b2de872aa3fd8e8fe9145d5ca2e7ef2864aa5036c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1E12F | 10752 bytes |
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