MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links to external resources, many of which point to a redirector infrastructure known for malicious activity. The document body, though heavily obfuscated, contains text suggesting a lure for a "statistical methods for social sciences 4th edition pdf" download, aligning with the "free download phishing" heuristic. The ML classifier also strongly indicated maliciousness.
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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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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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/pify?keyword=statistical+methods+for+social+sciences+4th+edition+pdf In PDF document text
- http://files.mthopesanctuary.org/uploads/1/3/0/7/130776001/2473866.pdfIn PDF document text
- http://files.kelliruttle.com/uploads/1/3/2/7/132710762/bubil.pdfIn PDF document text
- http://files.cmillns.com/uploads/1/3/0/7/130776514/wudawanafe.pdfIn PDF document text
- http://files.willowfree.ca/uploads/1/3/0/7/130740344/xiwodufa.pdfIn PDF document text
- http://files.get-hookedup.net/uploads/1/3/1/3/131379111/zefurewevipidudefi.pdfIn PDF document text
- http://files.holcombgc.com/uploads/1/3/0/8/130813557/bodopewedexigekopose.pdfIn PDF document text
- http://files.riversideanimalclinicmi.com/uploads/1/3/1/0/131070378/lufemukel.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://vexekube.files.wordpress.com/2020/06/73583662900.pdfIn PDF document text
- https://nubiwudowuva456071019.files.wordpress.com/2020/06/86708895480.pdfIn PDF document text
- https://jetisoka.files.wordpress.com/2020/06/visumaginugak.pdfIn PDF document text
- https://bafegetut.files.wordpress.com/2020/07/3904932583.pdfIn PDF document text
- https://xuvugumodad.files.wordpress.com/2020/07/95687167982.pdfIn PDF document text
- https://xipewisevu.files.wordpress.com/2020/07/xuwifojusu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8828/9694/files/52618795311.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/4916/5734/files/30733833285.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sagomowaroperovi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7514/1794/files/lakokozusigujixotabor.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/5242/4598/files/83432222489.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/8981/3909/files/68012473800.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7857/4490/files/90879887676.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_off00005307.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5307 | 5372 bytes |
SHA-256: 44f7206988650636cc8d11157f709e7303fee5bb738f619b9d99cb24e1067cf9 |
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font_01_sfnt_off00006515.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6515 | 10068 bytes |
SHA-256: 739e7b14fc85b9ad244a713e902b7028b7fe5fa1a9c831165e87886fcbf0c6c9 |
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