MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains numerous links, many of which point to a link farm hosted on Shopify, designed to appear as legitimate PDF downloads. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is likely the ultimate destination. The document body, though heavily obfuscated, contains text related to 'john hopkins antibiotic guide 2017 pdf', suggesting a lure to trick users into downloading what they believe is a medical guide. No scripts were extracted from this sample.
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=john+hopkins+antibiotic+guide+2017+pdf
- http://files.missouri-al-anon.org/uploads/1/3/2/6/132695200/8518029.pdf
- http://files.balloonwise.co.uk/uploads/1/3/1/8/131856430/91a6153bb.pdf
- http://files.brownthrash.com/uploads/1/3/0/7/130775297/zuwekapanisuzi.pdf
- http://files.rmc1studio.com/uploads/1/3/0/9/130968962/xodog_wugik_zokosewosexola_roriruzosajawu.pdf
- https://cdn.shopify.com/s/files/1/0433/9033/7189/files/32316605703.pdf
- https://cdn.shopify.com/s/files/1/0430/3526/3138/files/vijifagagekinosewo.pdf
- https://cdn.shopify.com/s/files/1/0430/8529/9874/files/47807056893.pdf
- https://cdn.shopify.com/s/files/1/0436/7020/8662/files/ropudawejupije.pdf
- https://cdn.shopify.com/s/files/1/0430/8133/4933/files/59124196706.pdf
- https://cdn.shopify.com/s/files/1/0434/5777/3718/files/werirap.pdf
- https://cdn.shopify.com/s/files/1/0440/1430/5430/files/mutogakatemasekorununi.pdf
- https://cdn.shopify.com/s/files/1/0432/4501/1112/files/33674407916.pdf
- https://cdn.shopify.com/s/files/1/0438/8506/8456/files/13842914746.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/refitapobofubogiwimubik.pdf
- https://cdn.shopify.com/s/files/1/0431/5702/9018/files/99_crafting_guide_osrs.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bojakotipizijogi.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_off00006550.binc42871a9b8996344d06fc8b2193234b74e07a784cc1b8dbebc1fd92e4cfa7466 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6550 | 5888 bytes |
font_01_sfnt_off0000795f.bine461a0ab34968bef7bf2c76855c850736f0a8f99c7b4b26ef6d2fad75c562660 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x795F | 10916 bytes |
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