MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains numerous embedded links, including one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to a book download and the malicious redirector URL. This suggests a social engineering attack aiming to trick users into visiting a malicious site under the guise of a free download. The ML classifier also strongly indicated maliciousness.
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.com/pify?keyword=cambridge+primary+mathematics+learner+s+book+3+pdf+free+download
- http://files.russellhillberry.net/uploads/1/3/0/7/130775596/1675338.pdf
- http://files.hapbaileyhudec.com/uploads/1/3/1/6/131607544/df829e5378.pdf
- http://files.thebinarylivingway.com/uploads/1/3/0/7/130775653/fifedexezubo.pdf
- https://cdn.shopify.com/s/files/1/0433/0697/5382/files/kilolefetenakenoje.pdf
- https://cdn.shopify.com/s/files/1/0431/0158/5570/files/ribetivuzigolapopal.pdf
- https://cdn.shopify.com/s/files/1/0438/4171/6389/files/divis.pdf
- https://cdn.shopify.com/s/files/1/0428/2833/3219/files/54178927373.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87664315042.pdf
- https://cdn.shopify.com/s/files/1/0433/9433/4869/files/90204893502.pdf
- https://cdn.shopify.com/s/files/1/0431/5817/5908/files/33446437562.pdf
- https://cdn.shopify.com/s/files/1/0431/7564/1247/files/pibozegijolep.pdf
- https://cdn.shopify.com/s/files/1/0429/9862/8501/files/64672871034.pdf
- https://cdn.shopify.com/s/files/1/0434/7976/1061/files/fekoke.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_off00004275.binb77276c6b5ecf95e56865cad0d4da1f30d6e10ffed230748abf44e9329af2d16 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4275 | 6036 bytes |
font_01_sfnt_off000056e4.bin55c7dd34eaea31e49284348ac0243ea19bb1d0dee01a61b7e1ea269adbcbfa7f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x56E4 | 9536 bytes |
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