MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a mass external link farm, with one prominent link pointing to a known malicious redirector. The document body, though partially corrupted, suggests a lure related to job promotions. The ML classifier strongly indicated maliciousness, and the presence of numerous links to external PDFs, including a malicious redirector, points towards an attempt to drive traffic to malicious infrastructure.
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=letter+format+for+promotion+in+job
- http://files.goldeninnervision.com/uploads/1/3/1/3/131398052/8017279.pdf
- http://files.lttn.com/uploads/1/3/0/8/130873877/1674187.pdf
- http://files.champaignband.com/uploads/1/3/0/8/130814714/1c2f33554.pdf
- http://files.edutechresearch.com/uploads/1/3/0/7/130740375/vogeriwa.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0431/8189/9936/files/cambios_fisiologicos_y_psicologicos_durante_el_embarazo.pdf
- https://cdn.shopify.com/s/files/1/0427/5575/2103/files/pygame_for_python_3._5.pdf
- https://cdn.shopify.com/s/files/1/0427/7954/1671/files/10411496273.pdf
- https://cdn.shopify.com/s/files/1/0437/3289/3857/files/loxitunovadujugekuj.pdf
- https://cdn.shopify.com/s/files/1/0439/4647/5678/files/control_wizard_dps_build_mod_11.pdf
- https://cdn.shopify.com/s/files/1/0431/8681/5139/files/17960484062.pdf
- https://cdn.shopify.com/s/files/1/0431/3268/2397/files/87551739545.pdf
- https://cdn.shopify.com/s/files/1/0430/9955/3959/files/xigexoxisagawaxame.pdf
- https://cdn.shopify.com/s/files/1/0432/8659/3694/files/angielski_dla_pocztkujcych_testy.pdf
- https://cdn.shopify.com/s/files/1/0434/8998/4678/files/clinical_chemistry_bishop_6th_edition.pdf
- https://cdn.shopify.com/s/files/1/0432/2515/3698/files/navosaxubeseb.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/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000470a.bin21107c88b3717da5fddac45bb79c7ed076e7c02c9fba393166b77498881af550 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x470A | 4992 bytes |
font_01_sfnt_off000057ec.bin458b9260c780812acb0e339aa6c8b00258d39d45c5a23885a0003a214572e865 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x57EC | 9608 bytes |
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