MALICIOUS
192
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is further disguised by a search query for a medical textbook. The presence of a "download button" heuristic suggests a lure to encourage user interaction with these links. No scripts were extracted from this sample.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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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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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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/wb?keyword=kasr%20el%20aini%20introduction%20to%20surgery%20pdf In PDF document text
- http://files.thebroomclosetmemphis.com/uploads/1/3/0/9/130969993/dimunodut_verovuje_jiniremibi.pdfIn PDF document text
- http://files.gogovernors.com/uploads/1/3/1/4/131406762/6528224.pdfIn PDF document text
- http://files.castlewoodclays.com/uploads/1/3/0/8/130873907/b18a71fa7bc6.pdfIn PDF document text
- http://files.newsotterleeproject.org/uploads/1/3/1/4/131406606/mupakulozik_mopasesiw_jezelibo_benotekefufaj.pdfIn PDF document text
- http://files.randrpressurewashingllc.com/uploads/1/3/1/4/131452870/dapaze_fusobilu_bipudajawe.pdfIn PDF document text
- http://files.oakislandhomeowners.org/uploads/1/3/1/4/131406982/7443262.pdfIn PDF document text
- http://files.canalsigling.com/uploads/1/3/1/3/131383018/8717392.pdfIn PDF document text
- http://files.tynksgemstonedesigns.com/uploads/1/3/2/7/132740415/7381d2f1749d4.pdfIn PDF document text
- http://files.elizabethrvann.net/uploads/1/3/0/9/130969884/3280599.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://forivugovov.files.wordpress.com/2020/06/37725913440.pdfIn PDF document text
- https://pegepev.files.wordpress.com/2020/06/jigoxadi.pdfIn PDF document text
- https://rexiduzaxiwu.files.wordpress.com/2020/07/gujovonoxezeze.pdfIn PDF document text
- https://zoxuwij.files.wordpress.com/2020/06/41242482704.pdfIn PDF document text
- https://bovurejevo984565953.files.wordpress.com/2020/06/31457016027.pdfIn PDF document text
- https://biloxes.files.wordpress.com/2020/06/savat.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75609531209.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/22511335110.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xogasetixudaxaw.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kevimofurerofujasopam.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56697352128.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000851e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x851E | 5276 bytes |
SHA-256: a67839f9358dbb4bced59bf959691a4bdab6409e277c6394a350845758ed34c5 |
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font_01_sfnt_off0000972b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x972B | 13792 bytes |
SHA-256: 332323cd7009c7a64de7de44514d99309fc558f377d2d958dfbadaf621ef2a35 |
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