MALICIOUS
128
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on cdn.shopify.com, suggesting an attempt to obscure the final malicious destination. The document body, though heavily obfuscated, contains the malicious URL and appears to be a lure related to an 'answer key'. No scripts were extracted, but the presence of a malicious redirector and link farm strongly indicates a phishing or malware delivery attempt.
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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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=mpsc+sti+pre+2017+answer+key
- http://files.cotuithistoricalsociety.org/uploads/1/3/2/7/132710763/c7d8c22042.pdf
- http://files.burntchef.com/uploads/1/3/1/3/131383959/ruxafivumebipajum.pdf
- http://files.thelifelinechurch.org/uploads/1/3/0/7/130740069/8181346.pdf
- https://cdn.shopify.com/s/files/1/0441/4128/1432/files/formal_business_letter_sample_complaint.pdf
- https://cdn.shopify.com/s/files/1/0434/4836/9319/files/68237229769.pdf
- https://cdn.shopify.com/s/files/1/0433/0464/8859/files/43084845051.pdf
- https://cdn.shopify.com/s/files/1/0430/9588/3925/files/30358059401.pdf
- https://cdn.shopify.com/s/files/1/0449/9108/6750/files/basic_chemistry_timberlake_3rd_edition.pdf
- https://cdn.shopify.com/s/files/1/0429/2821/0073/files/50605010046.pdf
- https://cdn.shopify.com/s/files/1/0439/5725/6350/files/wodipugumevizodoma.pdf
- https://cdn.shopify.com/s/files/1/0433/7405/1493/files/bosch_integrated_dishwasher_smv40c30gb_manual.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_off00005bba.binfbd7ce96809273ca86a8c52a5edd29c941cc74cd61040fa4d54432f3d8d2629f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5BBA | 5564 bytes |
font_01_sfnt_off00006ee0.binb9675ca59936f4ff081d9d866622d22b84122670059ab1995ae20276ac299682 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6EE0 | 10216 bytes |
font_02_sfnt_off000091df.bin7468a2359114728a3f55bcb1fdc4d3a9f5764ca3a6552804d1e560286436b985 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x91DF | 7752 bytes |
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