MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=butterworth+filter+using+bilinear+transformation'. This URL is likely used to redirect the user to a malicious site for phishing or malware delivery. The PDF also exhibits characteristics of a link farm, with numerous external links, suggesting an attempt to obscure the final malicious destination. The ML classifier strongly flagged this PDF as malicious.
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=butterworth+filter+using+bilinear+transformation
- https://cdn.shopify.com/s/files/1/0432/9888/1704/files/74499369498.pdf
- https://cdn.shopify.com/s/files/1/0430/3912/9751/files/idsa_ssti_guidelines_2016.pdf
- https://cdn.shopify.com/s/files/1/0437/7939/1637/files/slipknot_antennas_to_hell_free.pdf
- https://cdn.shopify.com/s/files/1/0435/7026/6273/files/vogelasor.pdf
- https://cdn.shopify.com/s/files/1/0431/5820/8674/files/47810230814.pdf
- https://cdn.shopify.com/s/files/1/0430/1045/7753/files/54291569653.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/14192803693.pdf
- https://cdn.shopify.com/s/files/1/0436/8800/1689/files/11520486293.pdf
- https://static.usrfiles.com/ugd/b8c837_da2133d936164a218f79a8d2f4a3d882.pdf
- https://static.usrfiles.com/ugd/b8c837_8ed5dcf84bea4e1887ed27bc043eac2f.pdf
- https://static.usrfiles.com/ugd/c0a468_c9de87caef0946d4813eb6224a19a0a6.pdf
- https://static.usrfiles.com/ugd/6d45f6_56a131887fda4c9aa4f0ffecbc0feeae.pdf
- https://static.usrfiles.com/ugd/eb6612_887b55063ce14395bf09a9ad17d170f6.pdf
- https://static.usrfiles.com/ugd/87a178_148e10a412aa4cada857b3f70a348d18.pdf
- https://static.usrfiles.com/ugd/79cb75_0277f00488364857945ffc88f3e26275.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_off0000abb7.binf03cd8b16c24aa9ed4502b1e62ad44c89114dc67c3503405baaeaf6bb97d1df5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xABB7 | 5464 bytes |
font_01_sfnt_off0000be3c.bin2e41f275f7fc5bdca286cda271415b6aa69ca3b44156e48f5d40646e923f435a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBE3C | 16168 bytes |
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