MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF document contains a large number of embedded links, many of which point to a link farm hosted on static.usrfiles.com, and one critical link to a known malicious redirector at ttraff.ru. This indicates a social engineering attempt to drive traffic to malicious infrastructure. No scripts were extracted, but the PDF structure itself is weaponized for link distribution.
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/wix?keyword=integer+problem+solving+activities
- https://cdn.shopify.com/s/files/1/0433/8027/7406/files/metibo.pdf
- https://cdn.shopify.com/s/files/1/0431/6289/4498/files/nba2k13_cheat_codes.pdf
- https://cdn.shopify.com/s/files/1/0429/2821/0073/files/62181198040.pdf
- https://static.usrfiles.com/ugd/b8c837_f6f01d067cf54a63b6bc79927bb47493.pdf
- https://static.usrfiles.com/ugd/eaf48f_d37d0f3fc7f441b591edd379bf920d6d.pdf
- https://static.usrfiles.com/ugd/b8c837_c98c319dd3274486bdf28506ffc0fbdc.pdf
- https://static.usrfiles.com/ugd/b916f4_8816706ef4474d11a0fc571ea8d9055e.pdf
- https://static.usrfiles.com/ugd/b8c837_5b28038f6e324f08ac9bb13e15575be2.pdf
- https://static.usrfiles.com/ugd/24853a_3592adebd56b47798d42d032f270f653.pdf
- https://static.usrfiles.com/ugd/b8c837_30c621700f0e4c5eb2ff5d703deefa45.pdf
- https://static.usrfiles.com/ugd/b8c837_e8842bec2de24456a8403725306eee8f.pdf
- https://static.usrfiles.com/ugd/b8c837_25543622b9ae4d07bb1ea74336628cf4.pdf
- https://static.usrfiles.com/ugd/a4d998_d6b2d5a662db4407b8a32a91c286d4cc.pdf
- https://static.usrfiles.com/ugd/11f207_0f95d476301c45cfb72e360b79b2c38d.pdf
- https://static.usrfiles.com/ugd/8ab72e_63d6896d829a4a8cb91ad27eea33cc38.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005850.bin8f46d9c0b1700fcd3ef6fcb183fb320f5e297d204d0623c39ec77425f4f795b2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5850 | 5180 bytes |
font_01_sfnt_off000069c8.bin5f17abc533c26f5a118eade73eec5fadd6bb36521eff527143025d20bbfd4dab |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x69C8 | 10236 bytes |
font_02_sfnt_off00008cbd.bina542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8CBD | 4324 bytes |
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