MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a mass external link farm, with a primary URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains references to academic books and URLs, suggesting a lure to trick users into clicking the malicious link. The ML classifier strongly supports the malicious verdict.
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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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=abstract+algebra+thomas+w+hungerford+pdf In PDF document text
- http://files.seattlestereo.com/uploads/1/3/0/8/130873820/3615345.pdfIn PDF document text
- http://files.wendyestorgamusic.com/uploads/1/3/2/7/132741225/xitujejasudub.pdfIn PDF document text
- http://logara.catharsisfightingthedrugepidemic.com/uploads/1/3/1/4/131407668/4663528.pdfIn PDF document text
- http://files.9488.kofcva.org/uploads/1/3/1/6/131636965/wegow-xetitotewidawok.pdfIn PDF document text
- http://files.synergyresearchlabs.com/uploads/1/3/2/6/132696194/41d9db44e6b0.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5797/9304/files/68810768056.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/3006/9927/files/dobarimume.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5254/7739/files/vodotitanipi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/86477918810.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/40948382406.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31968244380.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/2588/9442/files/50661446765.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/5930/4858/files/garmin_gpsmap_60csx_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1959/2099/files/97387359365.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6926/8373/files/10109725017.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6784/2465/files/23667959972.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_off000046f2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x46F2 | 5788 bytes |
SHA-256: e53e763ba37f1436e859642d8d8ca369a8421272eee6f5c780922337ce57db40 |
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font_01_sfnt_off00005a7b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5A7B | 9780 bytes |
SHA-256: 899cd2411611cf58095d012795b7db5e80d2ba489cd414be993ff0ff28edfb8f |
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