MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF contains embedded links, one of which points to a known malicious redirector (ttraff.ru). The document body, though heavily obfuscated, contains text related to 'convert base64 to pdf file java' and references wkhtmltopdf, suggesting a lure to a malicious site disguised as a utility. The presence of numerous external links, many hosted on Shopify, indicates a link farm strategy to improve search engine ranking for malicious content. The ML classifier also strongly flagged this PDF as malicious.
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=convert+base64+to+pdf+file+java
- http://files.sofiajagbrant.com/uploads/1/3/1/8/131856076/f5f1671979f5.pdf
- http://files.bikeraz.com/uploads/1/3/1/3/131384635/pokepusufabukutowosu.pdf
- http://files.faithsnotsoaveragelife.com/uploads/1/3/1/4/131453718/muzadetavapenagox.pdf
- https://cdn.shopify.com/s/files/1/0429/0176/6310/files/pizopinakasaj.pdf
- https://cdn.shopify.com/s/files/1/0434/4617/3852/files/kisepuw.pdf
- https://cdn.shopify.com/s/files/1/0434/0849/0663/files/97720054934.pdf
- https://cdn.shopify.com/s/files/1/0431/3353/4369/files/50161102715.pdf
- https://cdn.shopify.com/s/files/1/0435/3851/4071/files/livro_sobre_o_meio_ambiente.pdf
- https://cdn.shopify.com/s/files/1/0438/3126/3394/files/bovabuboluf.pdf
- https://cdn.shopify.com/s/files/1/0437/6946/2935/files/kefaboxago.pdf
- https://cdn.shopify.com/s/files/1/0431/3917/0466/files/8351376485.pdf
- https://cdn.shopify.com/s/files/1/0435/5109/6991/files/88291004161.pdf
- https://cdn.shopify.com/s/files/1/0434/1114/4861/files/96480580706.pdf
- https://cdn.shopify.com/s/files/1/0431/4100/5480/files/xatotufizofumawame.pdf
- https://cdn.shopify.com/s/files/1/0434/6272/1688/files/mixisatoj.pdf
- https://cdn.shopify.com/s/files/1/0434/5993/6421/files/72985018432.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_off00008e96.bin5689569765b1f465bb1dfd3363b924581c5cf13c6949e0e7c49d8b1e9fbf6ceb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8E96 | 5456 bytes |
font_01_sfnt_off0000a13e.bin07e60251b8f09dab7ce539fc9d17880bdc6189d8acb300dc88823b358a6660f1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA13E | 15596 bytes |
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