MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a prominent link disguised as a search result for a 'Briggs and Stratton 5hp engine manual'. This link, 'https://ttraff.ru/pify?keyword=briggs+and+stratton+5hp+engine+manual', is flagged as a malicious redirector. The document also exhibits characteristics of a link farm, embedding numerous other PDF links, many hosted on Shopify. The ML classifier strongly indicated maliciousness, supporting the attack pattern of luring users to malicious infrastructure.
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.ru/pify?keyword=briggs+and+stratton+5hp+engine+manual
- http://files.blackfoxxclothing.com/uploads/1/3/1/8/131856476/4521341.pdf
- http://files.columbiacountyuco.com/uploads/1/3/1/4/131437157/bevanizinelesadajep.pdf
- https://cdn.shopify.com/s/files/1/0434/8664/2336/files/brainstorming_method.pdf
- https://cdn.shopify.com/s/files/1/0430/6213/2897/files/rezem.pdf
- https://cdn.shopify.com/s/files/1/0427/6004/4710/files/69618171735.pdf
- https://cdn.shopify.com/s/files/1/0430/7409/3217/files/rixivofijevimibasivilu.pdf
- https://cdn.shopify.com/s/files/1/0428/5674/3079/files/86355708393.pdf
- https://cdn.shopify.com/s/files/1/0438/0708/0610/files/oxford_chemistry_dictionary.pdf
- https://cdn.shopify.com/s/files/1/0429/3437/0470/files/vemevozebesorezumojudow.pdf
- https://cdn.shopify.com/s/files/1/0428/1883/0503/files/zezekinesosetezelezujid.pdf
- https://cdn.shopify.com/s/files/1/0427/6482/8839/files/14644857880.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_off000046ba.bin760a93beba009c185357980f195decd65f1640deb1fe8b0ff5fe6fbc7a18d002 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x46BA | 5548 bytes |
font_01_sfnt_off0000596a.bin48b50e325e2f34e28b053a596b198a54e8776ce63231daa458a3328899b5ddfb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x596A | 9904 bytes |
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