MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wix?keyword=zte+handset+usb+driver'. This URL is presented within the document body, suggesting a lure to download a driver. The presence of a large number of external PDF links, many hosted on static.usrfiles.com, indicates a link farm, a common tactic for SEO poisoning or distributing malicious content. The ML classifier also 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/wix?keyword=zte+handset+usb+driver
- https://static.usrfiles.com/ugd/b8c837_cac35fdc5c674d378de60213d0f1a981.pdf
- https://static.usrfiles.com/ugd/c1615c_537529e8724349e3b8513485fcbf8973.pdf
- https://static.usrfiles.com/ugd/b8c837_4364837c90e34bed80cf35080e482e5a.pdf
- https://static.usrfiles.com/ugd/ae059d_b0312f695c584b03a8932eaeee956ed7.pdf
- https://static.usrfiles.com/ugd/87d215_ae144de964f74562b5ad41dbef2cbec5.pdf
- https://static.usrfiles.com/ugd/b8c837_da91eb6cea424e249b9b5cf871653045.pdf
- https://static.usrfiles.com/ugd/fa6f14_50dd8bc4032c4de78377b3ce8189bdc4.pdf
- https://cdn.shopify.com/s/files/1/0433/1352/8987/files/bengali_astronomy_book.pdf
- https://cdn.shopify.com/s/files/1/0440/4684/4054/files/xovuzolubuzex.pdf
- https://cdn.shopify.com/s/files/1/0435/1187/3688/files/rogexineriguzokovax.pdf
- https://static.usrfiles.com/ugd/d2cc1f_93c91b0f1c5247bfbcd9811ee4b81eb4.pdf
- https://static.usrfiles.com/ugd/b8c837_c21f99e7162d4716ba4de2ede43cec1f.pdf
- https://static.usrfiles.com/ugd/87fdc7_77131a8ece7a4c169f9719b1e81b1f27.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000054bb.bin2eeb63d6bbdc206f6c16dada67a1735327861584f3cd6135cba02100993d2beb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x54BB | 5036 bytes |
font_01_sfnt_off000065ce.binb94b520386efbcd94440ee5720e6026f70dea132fe3b905f43565564beacb03b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x65CE | 13552 bytes |
font_02_sfnt_off0000902e.binb0537bf13414dae314c9e017e80164e2142a20e44a99bca74a2bb57c0a317c82 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x902E | 17356 bytes |
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