MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains text related to 'design and analysis of algorithms 3rd edition solution manual pdf', suggesting a lure to trick users into clicking the malicious link. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious redirector attack pattern.
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=design+and+analysis+of+algorithms+3rd+edition+solution+manual+pdf
- http://files.wild-cherry-boutique.com/uploads/1/3/1/4/131437766/0fc121ccde.pdf
- http://files.sarahann-photography.com/uploads/1/3/1/6/131607712/8fbc1f.pdf
- http://kuwiraki.yourlovespells.com/uploads/1/3/1/3/131384169/d98fbbc5f.pdf
- https://cdn.shopify.com/s/files/1/0433/8060/5077/files/biosystems_a15.pdf
- https://cdn.shopify.com/s/files/1/0429/6710/5687/files/17285620409.pdf
- https://cdn.shopify.com/s/files/1/0430/6776/8981/files/xavuvurevopexari.pdf
- https://cdn.shopify.com/s/files/1/0433/6346/7414/files/gewapugosedo.pdf
- https://cdn.shopify.com/s/files/1/0437/7939/1646/files/vofigupasekowasabenebuliw.pdf
- https://cdn.shopify.com/s/files/1/0436/2698/7680/files/28385264813.pdf
- https://cdn.shopify.com/s/files/1/0428/5497/3606/files/74678031400.pdf
- https://cdn.shopify.com/s/files/1/0433/7870/4536/files/gozitekikiwowifej.pdf
- https://cdn.shopify.com/s/files/1/0440/5320/1046/files/gloom_gen_2_learnset.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_off00005c4c.bin4f08cc4f4e77b5b931e03fb890f372e18580cbd5e24111b527e4db7fef24ab87 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5C4C | 5720 bytes |
font_01_sfnt_off00006fb1.bin658f67a5d7550919360a2cd4ae6d975569835458b33bd9dee32d156f7e4bbf28 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6FB1 | 10716 bytes |
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