MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF contains a mass of external links, many pointing to benign Shopify URLs, but one critical link to `ttraff.ru` is identified as a malicious redirector. The document body, though heavily obfuscated, contains the text 'Cdna synthesis protocol invitrogen pdf' and the malicious URL, suggesting a lure to disguise the malicious intent. The presence of numerous PDF links and a critical redirector link strongly indicates a phishing or malware distribution 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.ru/pify?keyword=cdna+synthesis+protocol+invitrogen+pdf
- http://files.bayareazetaplayers.org/uploads/1/3/1/4/131483275/3188905.pdf
- http://files.chromosome3andme.com/uploads/1/3/1/4/131438464/fawitim.pdf
- http://sekip.centrealimentaireaylmer.org/uploads/1/3/0/7/130776485/a20126365fa.pdf
- http://powavum.chino77thcavalry.com/uploads/1/3/0/7/130775162/d1c00e.pdf
- https://cdn.shopify.com/s/files/1/0430/4715/7914/files/polymerisation_of_alkenes.pdf
- https://cdn.shopify.com/s/files/1/0433/3928/4645/files/borikufilefono.pdf
- https://cdn.shopify.com/s/files/1/0433/5245/7369/files/sharp_aquos_tv_user_manual.pdf
- https://cdn.shopify.com/s/files/1/0439/0522/0776/files/cardiopathie_rhumatismale.pdf
- https://cdn.shopify.com/s/files/1/0433/8250/5628/files/tufojegixitekogidatavusaj.pdf
- https://cdn.shopify.com/s/files/1/0434/6177/1430/files/astrand_bike_test_protocol.pdf
- https://cdn.shopify.com/s/files/1/0432/5572/6238/files/70275525546.pdf
- https://cdn.shopify.com/s/files/1/0428/7453/6103/files/discord_developer_mode.pdf
- https://cdn.shopify.com/s/files/1/0433/1274/2550/files/57232141977.pdf
- https://cdn.shopify.com/s/files/1/0432/5048/3368/files/diagnosis_banding_anemia_defisiensi_besi.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_off00004d05.bin368cf15f09d927484a314f86b9c9b4369088d4184f2c0521b3fc06eacfbcdf3e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4D05 | 5484 bytes |
font_01_sfnt_off00005fb5.bin2ccd9adf9fd6d7339260bac17c708f8086a7ccea83bf4b17356a5020ef92a6a0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5FB5 | 10064 bytes |
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