MALICIOUS
150
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains text related to 'birthday invitation letter format pdf' and includes the malicious URL. This suggests a social engineering lure to redirect the user to malicious content. The PDF also contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm used to obscure the ultimate destination.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 3
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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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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=birthday+invitation+letter+format+pdf
- http://tadik.retrohacks.net/uploads/1/3/1/0/131069839/bijoras_deketid_xovizefuvadet.pdf
- http://files.buildhealthyseniors.com/uploads/1/3/0/8/130813988/67c91d4d2.pdf
- http://files.visitsmithcountyms.org/uploads/1/3/2/6/132682883/c01545f011.pdf
- https://cdn.shopify.com/s/files/1/0432/8452/9310/files/gisuzafujugokapezivobeba.pdf
- https://cdn.shopify.com/s/files/1/0429/7513/3859/files/food_sensory_evaluation_form.pdf
- https://cdn.shopify.com/s/files/1/0431/3907/2161/files/repupotujexututidesuj.pdf
- https://cdn.shopify.com/s/files/1/0437/1123/4199/files/list_of_20_amino_acids.pdf
- https://cdn.shopify.com/s/files/1/0432/0172/4580/files/carcinoma_papilifero_tireoide.pdf
- https://cdn.shopify.com/s/files/1/0434/7704/1304/files/71721961168.pdf
- https://cdn.shopify.com/s/files/1/0434/2199/1079/files/govozox.pdf
- https://cdn.shopify.com/s/files/1/0429/1022/0447/files/54014795371.pdf
- https://cdn.shopify.com/s/files/1/0433/9236/8798/files/laluvalidowut.pdf
- https://cdn.shopify.com/s/files/1/0430/8339/9329/files/bedupefora.pdf
- https://cdn.shopify.com/s/files/1/0433/4351/1706/files/wekozikexapefipibexi.pdf
- https://cdn.shopify.com/s/files/1/0433/8846/9398/files/65999744833.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/
- https://cdn.shopify.com/s/files
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000069f1.bin443141fdde7f89ff12a617e9884266c650a01c215a0d98ede1a7ca413438cbde |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x69F1 | 5104 bytes |
font_01_sfnt_off00007b27.bin9fa9936a2b8ef6a66047bf8b450d6e7d5e295881f3e282d190363eb29f259949 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7B27 | 14640 bytes |
font_02_sfnt_off0000a91e.bincd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA91E | 4324 bytes |
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