MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF contains a link farm and a critical redirector link pointing to ttraff.ru, which is known malicious infrastructure. The document body, though partially corrupted, contains the same URL, suggesting an attempt to lure the user to a malicious site under the guise of a quiz. The ML classifier strongly supports the malicious verdict.
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=heterogeneous+and+homogeneous+mixtures+quiz+pdf
- http://files.richfeenstra.com/uploads/1/3/2/6/132682235/9453043.pdf
- http://files.hollygunn.com/uploads/1/3/1/4/131453695/jivifemivukur-zanuni.pdf
- http://files.nanni.info/uploads/1/3/1/6/131607075/mafitibobutolonefepa.pdf
- https://cdn.shopify.com/s/files/1/0431/0636/9703/files/ama_road_rport.pdf
- https://cdn.shopify.com/s/files/1/0430/9545/7941/files/revojidewukipemiku.pdf
- https://cdn.shopify.com/s/files/1/0428/3393/6547/files/lebositabajofu.pdf
- https://cdn.shopify.com/s/files/1/0433/6369/6805/files/2577322566.pdf
- https://cdn.shopify.com/s/files/1/0435/9254/8515/files/the_directory_is_missing_a_launcher_profile.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bifivejeg.pdf
- https://cdn.shopify.com/s/files/1/0429/5147/5351/files/xezelawajukesudasuduvemaj.pdf
- https://cdn.shopify.com/s/files/1/0432/7315/8806/files/letusovujevuge.pdf
- https://cdn.shopify.com/s/files/1/0433/4980/3166/files/kovizoz.pdf
- https://cdn.shopify.com/s/files/1/0434/5161/3334/files/dusadiz.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61066914906.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_off000045c6.bin6db55d1eb533c499c99ed6ac33edcd1245c1ff2245cf463d6e2b433d1a516d85 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x45C6 | 5628 bytes |
font_01_sfnt_off000058c7.bine8e25b568fdb52914905cdc4982d099a20b99f1757774427e6f2d6635314dcf8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x58C7 | 9156 bytes |
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