MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded links, a common tactic for SEO link farms and redirector abuse. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is disguised as a sewing machine manual. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the target URL, suggesting a lure to a malicious site.
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=brother+sewing+machine+se400+manual
- http://files.allspacesllc.com/uploads/1/3/2/8/132814990/797d0b48852e8b5.pdf
- http://files.viewsonbrews.com/uploads/1/3/1/0/131070845/f3ad77b20.pdf
- http://files.madisonbizreview.com/uploads/1/3/2/6/132696029/5809701.pdf
- http://files.lilysparkles.co.uk/uploads/1/3/0/8/130874370/lulubuveganan.pdf
- https://cdn.shopify.com/s/files/1/0429/9846/4661/files/68404329996.pdf
- https://cdn.shopify.com/s/files/1/0431/9268/0605/files/mastering_physics_chapter_3_solutions.pdf
- https://cdn.shopify.com/s/files/1/0429/5199/9637/files/st_louis_blues_tenor_sax_sheet_music.pdf
- https://cdn.shopify.com/s/files/1/0464/6889/0782/files/microsoft_powerpoint_slide_design_templates.pdf
- https://cdn.shopify.com/s/files/1/0427/8976/5279/files/busunobadikifegane.pdf
- https://cdn.shopify.com/s/files/1/0429/3401/0015/files/biwakobexu.pdf
- https://cdn.shopify.com/s/files/1/0433/4737/8344/files/reporting_binomial_test_apa.pdf
- https://cdn.shopify.com/s/files/1/0429/5104/9370/files/fizelit.pdf
- https://cdn.shopify.com/s/files/1/0429/1470/9663/files/35372290871.pdf
- https://cdn.shopify.com/s/files/1/0431/5434/2042/files/as_nzs_3000.pdf
- https://cdn.shopify.com/s/files/1/0440/8839/3893/files/61038167000.pdf
- https://cdn.shopify.com/s/files/1/0437/7752/3873/files/velufiw.pdf
- https://cdn.shopify.com/s/files/1/0440/2587/2549/files/9663433917.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_off000061e1.bind061389cf8bce471bac6675dfdc48ac559c2f37f40ee38357d9dd68766152a02 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x61E1 | 5584 bytes |
font_01_sfnt_off000074ca.bin5ceb9373edd3dbf019d833a440858fa7773acf0e757141f1f0ad33f02438dc64 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x74CA | 10424 bytes |
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