MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The primary malicious URL identified is ttraff.ru, which is used in conjunction with a keyword related to 'off-balance sheet definition'. The document body, though heavily obfuscated, also contains this URL, suggesting it's the intended destination. The presence of numerous external PDF links points towards a strategy to broaden the attack surface or distribute further malicious content.
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=off-+balance+sheet+definition+wikipedia
- http://files.wskvfm.com/uploads/1/3/1/4/131437878/fodamozatogaf-tijokil-zerifejaro.pdf
- http://files.wskvfm.com/uploads/1/
- https://cdn.shopify.com/s/files/1/0432/3786/7687/files/browsec_vpn_for_mobile_apk.pdf
- https://cdn.shopify.com/s/files/1/0437/4501/8017/files/bupomevatafakipopijugisu.pdf
- https://cdn.shopify.com/s/files/1/0434/1648/6040/files/vojaxirupotagobojozuru.pdf
- https://cdn.shopify.com/s/files/1/0428/0962/2687/files/lagujefixikogilonijegoso.pdf
- https://cdn.shopify.com/s/files/1/0434/7707/4086/files/23569777472.pdf
- https://cdn.shopify.com/s/files/1/0431/0922/0503/files/mavukaju.pdf
- https://cdn.shopify.com/s/files/1/0432/9986/4734/files/tofedagekovelifi.pdf
- https://cdn.shopify.com/s/files/1/0431/4936/1314/files/sewezavofenu.pdf
- https://cdn.shopify.com/s/files/1/0429/8794/6133/files/jabakup.pdf
- https://cdn.shopify.com/s/files/1/0438/5597/0454/files/algorithm_design_and_analysis_by_udit_agarwal.pdf
- https://cdn.shopify.com/s/files/1/0438/7222/3387/files/castrol_atf_dex_ii.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_off00007182.bin255557c11d179978803b733ddca090c763f0b8331d29ff01b1ad2de4c784df8d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7182 | 5504 bytes |
font_01_sfnt_off00008447.binc944ed69d41e1c53ad8f6dd6d9de8bdf660692003cc5b2a0679f2e482a38f2ee |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8447 | 10544 bytes |
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