MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link that redirects to a malicious URL, disguised as a 'grammar check app free' download. This is further supported by heuristics indicating a malicious redirector link and a PDF link farm. The ML classifier strongly flagged this PDF as malicious. The primary intent appears to be social engineering users into visiting a malicious site.
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.com/pify?keyword=grammar+check+app+free
- http://files.texantoweroa.org/uploads/1/3/0/7/130775368/d2b4c12.pdf
- https://cdn.shopify.com/s/files/1/0434/4443/7142/files/sevij.pdf
- https://cdn.shopify.com/s/files/1/0432/5877/3662/files/resinulol.pdf
- https://cdn.shopify.com/s/files/1/0433/9469/5318/files/dawuxodudo.pdf
- https://cdn.shopify.com/s/files/1/0429/6838/3642/files/temaviputuzigadif.pdf
- https://cdn.shopify.com/s/files/1/0437/7955/5486/files/xipepelixirepavisewepako.pdf
- https://cdn.shopify.com/s/files/1/0433/3712/1951/files/49378259083.pdf
- https://cdn.shopify.com/s/files/1/0430/0741/0329/files/93078447232.pdf
- https://cdn.shopify.com/s/files/1/0438/3372/0992/files/tisagak.pdf
- https://cdn.shopify.com/s/files/1/0437/5258/7415/files/57419539422.pdf
- https://cdn.shopify.com/s/files/1/0433/4062/8133/files/sigeb.pdf
- https://cdn.shopify.com/s/files/1/0431/6200/9760/files/worksheets_on_imperative_sentences.pdf
- https://cdn.shopify.com/s/files/1/0436/9963/4330/files/certificate_of_conformity_mercedes_uk.pdf
- https://cdn.shopify.com/s/files/1/0434/0691/7799/files/xalijazo.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_off0000604e.bin9a301cbc43bfca08c2d53c5fca1d535eac7a4f45315a8e75f66f3479cd51a171 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x604E | 4584 bytes |
font_01_sfnt_off00006fd6.binb8f70aed55b43cd5fa940d8942cf152ce9571e4bf99d16ecd6d322666571bf68 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6FD6 | 10036 bytes |
font_02_sfnt_off0000923f.bin1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x923F | 4324 bytes |
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