MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains embedded links that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though corrupted, contains text suggesting a lure related to a 'job application letter format'. The ML classifier strongly flagged this PDF as malicious. The primary attack vector appears to be social engineering via a deceptive link within the document.
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=job+application+letter+format+class+11
- http://xinaniro.crstakers.org/uploads/1/3/1/3/131383544/e3888e1668f27e8.pdf
- http://files.silvervalleyfarmsgooseeggs.com/uploads/1/3/1/4/131407465/08d8bc5ab7d.pdf
- http://lutefubi.violetandromeda.com/uploads/1/3/1/4/131437906/gilelunofenumafizidi.pdf
- http://files.fionacompton.com/uploads/1/3/1/3/131383864/litarokog_vufiwupotel_zusasulunejemi_zarof.pdf
- https://cdn.shopify.com/s/files/1/0428/2292/6492/files/gabriel_garcia_marquez_chronicle_of_a_death_foretold.pdf
- https://cdn.shopify.com/s/files/1/0433/4714/8950/files/95440911902.pdf
- https://cdn.shopify.com/s/files/1/0439/5424/1694/files/83716175992.pdf
- https://cdn.shopify.com/s/files/1/0432/9232/8102/files/87772722651.pdf
- https://cdn.shopify.com/s/files/1/0434/4872/9766/files/19204889154.pdf
- https://cdn.shopify.com/s/files/1/0430/4227/5485/files/46175631023.pdf
- https://cdn.shopify.com/s/files/1/0435/2222/8379/files/33484294339.pdf
- https://cdn.shopify.com/s/files/1/0431/6109/2245/files/96972090586.pdf
- https://cdn.shopify.com/s/files/1/0450/0973/1734/files/canape_vector.pdf
- https://cdn.shopify.com/s/files/1/0430/2703/8371/files/nojujeledazutabexo.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_off00006108.binfff7051e3d3dc4be269abf215e72b39b220757e563a9a84c0a90de584cf29b18 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6108 | 5344 bytes |
font_01_sfnt_off0000731a.binf447dd8ba28c2ae829b1c81e3fd0781c6e9a2573002b32ccd655ecfefb0825f4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x731A | 10544 bytes |
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