MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised with the text 'Last spring grieg sheet music'. This suggests a social engineering lure to trick users into visiting a malicious site. The PDF also contains a large number of links to external PDFs hosted on Shopify, likely part of a link farm to improve search engine ranking for malicious content. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis.
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=last+spring+grieg+sheet+music
- https://cdn.shopify.com/s/files/1/0429/2093/5590/files/satellite_altimetry_over_oceans_and_land_surfaces.pdf
- https://cdn.shopify.com/s/files/1/0437/2480/0154/files/astm_a105n_standard.pdf
- https://cdn.shopify.com/s/files/1/0431/4680/5408/files/82659085156.pdf
- https://cdn.shopify.com/s/files/1/0430/3103/6053/files/rovanegoviviwinipilano.pdf
- https://cdn.shopify.com/s/files/1/0432/1637/1867/files/rejulot.pdf
- https://static.usrfiles.com/ugd/97aff7_12a0c33cd4c04c019d909b41d3e99538.pdf
- https://static.usrfiles.com/ugd/b8c837_1072f2984b824961b8490174f6a3f09d.pdf
- https://static.usrfiles.com/ugd/3e5d97_53787a5559a84ce5a1d21bd15ea40641.pdf
- https://static.usrfiles.com/ugd/cc15ef_56008965da324fee92ed2f8b2e3ab6f0.pdf
- https://cdn.shopify.com/s/files/1/0428/8937/9993/files/inon_zur_leliana_s_song.pdf
- https://cdn.shopify.com/s/files/1/0434/5007/3240/files/11706923596.pdf
- https://cdn.shopify.com/s/files/1/0431/8052/3678/files/64184500078.pdf
- https://cdn.shopify.com/s/files/1/0437/0055/1830/files/asphalt_6_apk_mod.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_off0000560b.binc63f9bf2df33eb7f9cfd55526974fa6c69ec73e329c3cbdac7a937a27cd08789 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x560B | 5256 bytes |
font_01_sfnt_off000067c5.bin302f2352926beb44a2553a34fa531580f1b62cf44af9c016db7f49326f61e9f0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x67C5 | 10204 bytes |
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