MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains, suggesting a link farm or redirection scheme. One critical heuristic identified a link to a known malicious redirector, ttraff.me, which is likely the primary malicious payload delivery mechanism. The document body, though heavily obfuscated, contains text related to '4.3 acceleration practice worksheet answers', indicating a lure to trick users into clicking the malicious link. No scripts were extracted from this sample.
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.me/wix?keyword=4.3+acceleration+practice+worksheet+answers
- http://ziravo.weweresosmall.com/uploads/1/3/1/4/131406686/671182295e60.pdf
- http://kigutu.creativedentaldesignsaz.com/uploads/1/3/2/8/132814930/nufow-tovomu-gejusaza.pdf
- http://rolowunem.southtexashomespun.com/uploads/1/3/2/6/132682076/da45c.pdf
- http://fogirizax.mitchadvent.com/uploads/1/3/1/6/131637046/tajujisokifa_gojedomobeke.pdf
- https://cdn.shopify.com/s/files/1/0440/9311/2472/files/26727454505.pdf
- https://cdn.shopify.com/s/files/1/0431/6702/3259/files/29285646109.pdf
- https://cdn.shopify.com/s/files/1/0437/8948/4194/files/bobubobefusesi.pdf
- https://cdn.shopify.com/s/files/1/0430/6812/9431/files/lamalasitovikitomafex.pdf
- https://cdn.shopify.com/s/files/1/0432/5936/3488/files/7185659841.pdf
- https://cdn.shopify.com/s/files/1/0438/0763/7661/files/reported_speech_exercises_mixed_tenses.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_off00004cfc.bin790b5d8f20e04fdfe272ec8cd46efb135e1203b2040795a2054bc21ac8c8ac17 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4CFC | 5364 bytes |
font_01_sfnt_off00005f57.bin4aa3f4c822bd473681096d1bed511a4051c4b0a64e1dbf2f5b1314fefab70eee |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5F57 | 10136 bytes |
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