MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.001 Malicious Link
The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic identified a link to a known malicious redirector infrastructure, specifically 'https://ttraff.cc/wb?keyword=aprilaire%20500%20manual'. This suggests the document is part of a link farm or SEO poisoning campaign designed to drive traffic to malicious sites. 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.cc/wb?keyword=aprilaire%20500%20manual In PDF document text
- http://files.u3abroadbeach.com/uploads/1/3/1/3/131398517/44b47ac3.pdfIn PDF document text
- http://files.apiyauya.com/uploads/1/3/1/8/131856382/4124775.pdfIn PDF document text
- http://files.dlfinancial.org/uploads/1/3/1/3/131379749/tobij.pdfIn PDF document text
- http://files.commsailpistakee.org/uploads/1/3/0/7/130739824/wokogabofeb.pdfIn PDF document text
- http://files.williamsfamilyfarms-ms.com/uploads/1/3/0/8/130813799/rorefabam-kiresuwadototi-zawiliwopilowon-xileluni.pdfIn PDF document text
- http://files.cailenfu.com/uploads/1/3/1/4/131437444/rutez_wubusaxofab_kajali_zuwogor.pdfIn PDF document text
- http://files.lscrta.org/uploads/1/3/1/1/131164231/d82f2e224.pdfIn PDF document text
- http://files.twoplumsdesign.com/uploads/1/3/0/9/130969048/528231836.pdfIn PDF document text
- http://files.surrenderedtochrist.org/uploads/1/3/2/6/132681656/wulegi.pdfIn PDF document text
- http://files.vikkiconley.com/uploads/1/3/0/7/130776640/siwamite.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://danawuwida.files.wordpress.com/2020/07/rozikekokemepusarakaf.pdfIn PDF document text
- https://gitorolopi.files.wordpress.com/2020/07/xivikofadalivoraxujezuw.pdfIn PDF document text
- https://rowejarenak237226416.files.wordpress.com/2020/06/32106911623.pdfIn PDF document text
- https://rovekozo.files.wordpress.com/2020/07/dufajawililuziwimojubo.pdfIn PDF document text
- https://niteperozis.files.wordpress.com/2020/07/noxokuririwuboridavufizo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejukimuvili.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/4077026649.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32732230761.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zosakasebiribo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ganisififado.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pufabupenidobuxix.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_off000069ae.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x69AE | 4736 bytes |
SHA-256: 5cca4221dd6784a86486d711ba0c32a5ddb5d2ee8af09bb8b705d60825cfe493 |
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font_01_sfnt_off0000798f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x798F | 10648 bytes |
SHA-256: 78c398ada3a874f7132055e8b518dfbc960db1309cc443c646d33a055d1aa5c5 |
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