MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF was flagged as malicious due to a critical heuristic identifying it as a redirector link to known malicious infrastructure. Additionally, it contains a link farm with numerous external PDF links, many hosted on static.usrfiles.com. The document body contains obfuscated text and a URL that appears to be part of the redirection chain. No scripts were extracted, but the presence of a malicious redirector URL and the link farm structure strongly suggest a phishing or malware delivery attempt.
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=vizio+e+series+gaming
- http://droidreview.ne
- https://static.usrfiles.com/ugd/9219f8_7b2cde4da23648ae9048b09cf089eb85.pdf
- https://static.usrfiles.com/ugd/b8c837_6a15653272244229a0a2a02fb1223f26.pdf
- https://static.usrfiles.com/ugd/b8c837_c959401c0ceb4e5ebe8ae4b67ebb1093.pdf
- https://static.usrfiles.com/ugd/b8c837_910c8692a0a848e5a20d7019f2cafdaa.pdf
- https://static.usrfiles.com/ugd/b8c837_d89f4c1daefa4a51ba6be8fbc032956c.pdf
- https://static.usrfiles.com/ugd/0779a3_91bd2a47822746a9a9c9863a245d5698.pdf
- https://static.usrfiles.com/ugd/384ea4_9161773382814ee69c96fa884d0c9417.pdf
- https://static.usrfiles.com/ugd/b8c837_cec769a20d4b4e14ac8439ac311efde1.pdf
- https://cdn.shopify.com/s/files/1/0457/8974/1222/files/assisi_convent_school_admission_form_2020-_21.pdf
- https://cdn.shopify.com/s/files/1/0434/7356/7901/files/metofiwowojulinotex.pdf
- https://cdn.shopify.com/s/files/1/0438/2628/2658/files/acetaminophen_davis_drug.pdf
- https://cdn.shopify.com/s/files/1/0432/2315/4847/files/air_pollution_effects_on_plants.pdf
- https://cdn.shopify.com/s/files/1/0461/9026/4469/files/2077392948.pdf
- https://cdn.shopify.com/s/files/1/0431/3523/8301/files/kubeve.pdf
- https://cdn.shopify.com/s/files/1/0434/2572/6614/files/beowulf_movie_in_telugu_dubbed.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_off00006310.bin9981cb572db13640c9c985a3e2810fc08ce864fe16d3c8de5deed7acc6c0a303 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6310 | 4988 bytes |
font_01_sfnt_off000073fb.bin5c9072becea72c4271d71b6adf5d80fbcddd2828ba0d44e1202ab2a2830d9968 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x73FB | 10316 bytes |
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