MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link farm designed to appear as a free download for a technical book, but the primary link redirects to a known malicious infrastructure. The ML classifier strongly indicated maliciousness, and the PDF structure suggests a link-based lure. The embedded URLs are part of a link farm strategy to obscure the malicious redirector.
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.cc/pify?keyword=data+structures+and+algorithms+made+easy+karumanchi+pdf
- http://files.pilipinaskalikasan.com/uploads/1/3/1/6/131636990/komovole.pdf
- http://files.nichellerenee.solutions/uploads/1/3/1/4/131406527/guratasagejako.pdf
- http://files.waiwichita.org/uploads/1/3/0/9/130969474/nujimegegebose.pdf
- https://cdn.shopify.com/s/files/1/0434/4568/2328/files/kufogufol.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rabilividobakomitunaxizug.pdf
- https://cdn.shopify.com/s/files/1/0432/5395/6758/files/pofaforemex.pdf
- https://cdn.shopify.com/s/files/1/0431/0587/8170/files/zomig.pdf
- https://cdn.shopify.com/s/files/1/0427/4687/1974/files/43865826643.pdf
- https://cdn.shopify.com/s/files/1/0431/0643/5232/files/64867924223.pdf
- https://cdn.shopify.com/s/files/1/0428/9980/0217/files/dicionario_aramaico_portugues.pdf
- https://cdn.shopify.com/s/files/1/0438/2490/6397/files/79709531382.pdf
- https://cdn.shopify.com/s/files/1/0431/8602/8708/files/terminal_command_line_cheat_sheet.pdf
- https://cdn.shopify.com/s/files/1/0441/3338/4344/files/mb_publication_english_book_for_bank_clerk.pdf
- https://cdn.shopify.com/s/files/1/0431/5329/3469/files/active_listening_psychology.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_off00005cc4.binb948ac3724e6c7ff6e885952275fb84161a4c6b6196ba6a58f723dff584ac516 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5CC4 | 5616 bytes |
font_01_sfnt_off00006fba.bin406ace54f221e3331569fdf4fb17054c8c405e241bf7715897faa50bb96faf8d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6FBA | 10520 bytes |
font_02_sfnt_off0000938b.bin9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x938B | 4324 bytes |
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