MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF document exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources. One critical heuristic firing indicates a malicious redirector link, specifically `https://ttraff.ru/pify?keyword=guide+to+antimicrobial+therapy+2017`, which is likely used to direct users to malicious content. The document body, though heavily obfuscated, contains text related to 'guide to antimicrobial therapy 2017', suggesting a lure to entice users to click the malicious links.
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=guide+to+antimicrobial+therapy+2017
- http://files.northwoodsquiltguild.net/uploads/1/3/0/7/130776246/9d87468.pdf
- http://files.ohca-reprobank.org/uploads/1/3/1/4/131437924/rukedetifaxovowakus.pdf
- http://files.stdaighs.com/uploads/1/3/0/7/130739112/patokefiruzikadazisa.pdf
- http://tavikora.siblingsandcompany.com/uploads/1/3/1/3/131383727/kurojesirazur_lotaga_wuxapogex_zelavosila.pdf
- https://cdn.shopify.com/s/files/1/0431/5247/4267/files/71982884026.pdf
- https://cdn.shopify.com/s/files/1/0434/3303/3880/files/tesis_de_brosimum_alicastrum.pdf
- https://cdn.shopify.com/s/files/1/0432/5556/2398/files/vifipovodevebabu.pdf
- https://cdn.shopify.com/s/files/1/0429/6284/5859/files/53610007039.pdf
- https://cdn.shopify.com/s/files/1/0431/0643/5232/files/japejovomuvulumebudegiro.pdf
- https://cdn.shopify.com/s/files/1/0440/2089/1798/files/fugutamadebijakexevon.pdf
- https://cdn.shopify.com/s/files/1/0427/4031/8375/files/kaniboxifizi.pdf
- https://cdn.shopify.com/s/files/1/0437/3925/0853/files/garmin_nuvi_2595lmt.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00008ea3.bince9ca2a4cdfacc1eedb895869be04761c2bbebe9a031c7a04c5b0c224159855f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8EA3 | 5696 bytes |
font_01_sfnt_off0000a1e0.bin9d68f04feb1240bff3dab91682a4d30ae0f3a0481facf813057da9cd802b4df0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA1E0 | 11800 bytes |
font_02_sfnt_off0000c833.bin1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC833 | 4324 bytes |
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