MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a large number of embedded links, many of which point to disposable domains and are likely part of an SEO poisoning or link farm scheme. One critical heuristic identified a link to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. No scripts were extracted from this sample.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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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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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=free%20printable%20fun%20math%20worksheets%20for%203rd%20grade In PDF document text
- http://files.lbcatwateroh.com/uploads/1/3/0/7/130740124/585a93ae527f.pdfIn PDF document text
- http://files.copelincontract.com/uploads/1/3/1/8/131857193/6879c55ac.pdfIn PDF document text
- http://files.battleagainsthunger.org/uploads/1/3/0/7/130739498/gupakujinexaselorite.pdfIn PDF document text
- http://files.hello-baby-toys.com/uploads/1/3/1/4/131453807/4352687.pdfIn PDF document text
- http://files.cnhcep.com/uploads/1/3/1/3/131380467/c2ff52.pdfIn PDF document text
- http://files.viceroyautotrans.com/uploads/1/3/1/3/131383802/8683192.pdfIn PDF document text
- http://files.superdiscountwigs.com/uploads/1/3/1/3/131384121/terobasugivitu.pdfIn PDF document text
- http://files.skyezentzmusic.com/uploads/1/3/1/4/131409508/4804667.pdfIn PDF document text
- http://files.brittalinnanderson.com/uploads/1/3/0/8/130814674/27ec0e8c4.pdfIn PDF document text
- http://files.thirdcinemaproductions.com/uploads/1/3/1/3/131379749/sonazez.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://fakemoj.files.wordpress.com/2020/06/41530402424.pdfIn PDF document text
- https://fofudulopave.files.wordpress.com/2020/07/69980788407.pdfIn PDF document text
- https://nebeseti.files.wordpress.com/2020/06/pivur.pdfIn PDF document text
- https://fazefamakof.files.wordpress.com/2020/06/60872295912.pdfIn PDF document text
- https://namerixug.files.wordpress.com/2020/06/jodutitodo.pdfIn PDF document text
- https://gufakiv.files.wordpress.com/2020/06/68428640189.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kesazemoluvumexon.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/norojakibi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bizisumexu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pujofupokutesigitugut.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/67142307476.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/koxumugude.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_off00006d62.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6D62 | 5752 bytes |
SHA-256: a013ce32f25a0cb7b0a79bc2d4621031af2de8f852d15c8da1e1518d860524e3 |
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font_01_sfnt_off000080d5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x80D5 | 9952 bytes |
SHA-256: 16a087e23b7941a876f6c52169c62f87acfabec863e6fb8690242e0eaeff6b52 |
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