MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a critical heuristic firing for a malicious redirector link, specifically `https://ttraff.ru/pify?keyword=ldc+16+sept+answer+key+pdf`. This URL is embedded within the document body, disguised as a link to an answer key. The presence of a large number of external PDF links, many hosted on shopify.com, suggests a link farm intended to obscure the malicious redirector. 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.ru/pify?keyword=ldc+16+sept+answer+key+pdf
- http://files.englewoodfencing.org/uploads/1/3/2/6/132695325/44f0616d36c0.pdf
- http://files.artofbobhannah.com/uploads/1/3/1/1/131164130/vesivajitujolatasoke.pdf
- http://files.arrisdesrosiers.com/uploads/1/3/0/7/130738704/xigatumik.pdf
- http://files.caseyharvilla.com/uploads/1/3/2/7/132712214/vevuzupakaki.pdf
- https://cdn.shopify.com/s/files/1/0432/1175/1588/files/62849936849.pdf
- https://cdn.shopify.com/s/files/1/0436/6172/1765/files/dekiziradidepepikasilete.pdf
- https://cdn.shopify.com/s/files/1/0430/7327/4018/files/romijaj.pdf
- https://cdn.shopify.com/s/files/1/0432/6365/6099/files/budilepeniximomamar.pdf
- https://cdn.shopify.com/s/files/1/0438/4056/9494/files/91516213166.pdf
- https://cdn.shopify.com/s/files/1/0431/6617/1287/files/78351897264.pdf
- https://cdn.shopify.com/s/files/1/0435/3871/0696/files/tojil.pdf
- https://cdn.shopify.com/s/files/1/0438/1101/2770/files/10441771027.pdf
- https://cdn.shopify.com/s/files/1/0429/8774/9525/files/jumirosome.pdf
- https://cdn.shopify.com/s/files/1/0433/9076/3175/files/mozekipifamu.pdf
- https://cdn.shopify.com/s/files/1/0429/5147/5351/files/6526718247.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_off00005e79.bin33b9bba107b18c3711bd7ec8a576bfd21a89c88ae060daee23c3ccc681347255 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5E79 | 5524 bytes |
font_01_sfnt_off00007174.bin102cbfd55946b2a8619d683c2f71a4d23fcfbe5538927456b5689a48dcc9b7d5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7174 | 10156 bytes |
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