MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a deceptive link disguised as a download for "Chemdraw free pro 8.0". This link, https://ttraff.ru/pify?keyword=chemdraw+free+pro+8.+0, points to a known malicious redirector. The document also features a large number of external PDF links, many hosted on Shopify, which is characteristic of SEO link farm abuse to obscure malicious destinations. The ML classifier 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.ru/pify?keyword=chemdraw+free+pro+8.+0
- http://vemerugo.13thguardspoltavaskaya.com/uploads/1/3/2/7/132740609/rojevulavi_zodof_pimegepamisipud.pdf
- http://lavufova.collegewomensclubofdayton.org/uploads/1/3/1/4/131406361/sekoguvosojiwajik.pdf
- http://xuseku.bibisnelderwaardbrion.com/uploads/1/3/1/8/131856166/ribefiruwobita.pdf
- https://cdn.shopify.com/s/files/1/0438/1786/1280/files/18539307651.pdf
- https://cdn.shopify.com/s/files/1/0430/4204/6103/files/jopifopalopenoro.pdf
- https://cdn.shopify.com/s/files/1/0428/4982/9023/files/87328128308.pdf
- https://cdn.shopify.com/s/files/1/0428/2833/3219/files/pdf_of_mixture_and_alligation_problems_for_competitive_exams.pdf
- https://cdn.shopify.com/s/files/1/0434/1714/1415/files/possessivi_italiano.pdf
- https://cdn.shopify.com/s/files/1/0432/9521/1680/files/23298505396.pdf
- https://cdn.shopify.com/s/files/1/0430/6354/1917/files/58142417862.pdf
- https://cdn.shopify.com/s/files/1/0433/4295/4661/files/adobe_premiere_pro_cc_tutorial_free_download.pdf
- https://cdn.shopify.com/s/files/1/0438/2598/7734/files/efesios_hernandes_dias_lopes.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_off00004c62.bin4e42e4c78644d7ae3fae85ec06aaddf4f41030389f735efad383eda828e296c9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4C62 | 5436 bytes |
font_01_sfnt_off00005ed2.binf6807464f8351c32513363ce7a4cb27d3d10b5027d2a3fee8c8644191170fc39 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5ED2 | 10192 bytes |
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