MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a critical heuristic firing for a malicious redirector link, directing users to a URL that appears to be part of an SEO link farm. The embedded URL in the document body, 'https://ttraff.cc/wb?keyword=subtraction%20formula%20in%20excel%20worksheet', is designed to trick users into clicking by mimicking a search result. The PDF also contains a large number of links to other PDFs, likely for SEO manipulation to improve the ranking of malicious content.
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/wb?keyword=subtraction%20formula%20in%20excel%20worksheet In PDF document text
- http://files.lovingalways.com/uploads/1/3/0/7/130776370/5204311.pdfIn PDF document text
- http://files.purplespirithealing.com/uploads/1/3/1/1/131164260/porijitorodibugiraf.pdfIn PDF document text
- http://files.simplydivinesuds.com/uploads/1/3/1/4/131407812/23f3d849.pdfIn PDF document text
- http://files.cvillepack77.org/uploads/1/3/1/0/131070572/9694475.pdfIn PDF document text
- http://files.cynthiawidawski.com/uploads/1/3/1/0/131070861/371a75a038.pdfIn PDF document text
- http://files.trigvintage.com/uploads/1/3/1/4/131409761/giravodowe.pdfIn PDF document text
- http://files.johnbiesecker.com/uploads/1/3/1/6/131606073/6357906.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://zunowud332468685.files.wordpress.com/2020/07/33161405293.pdfIn PDF document text
- https://tijezaj.files.wordpress.com/2020/06/7905998470.pdfIn PDF document text
- https://bazebibirolo.files.wordpress.com/2020/07/89196307079.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vunumegosuvuvorewufo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6309/1112/files/19696161235.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4379/0760/files/xirulivamenuduvofibajafev.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tefabojukiva.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7063/5678/files/96696202208.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9755/5108/files/jebaxidovipinawame.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/2870/0571/files/94173546242.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7755/8681/files/83341117131.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4185/7448/files/85792432140.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wajafaliwufenosikem.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_off0000800f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x800F | 5468 bytes |
SHA-256: 2183aa1860387786e2340c7788917b3536d629c133dc35a70a775c2d93f3bbd8 |
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font_01_sfnt_off0000928a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x928A | 10840 bytes |
SHA-256: 24fe8d4f3e9a6534b0017c67000a7dfecb820e1541f6f45ac4c3ae66786224d9 |
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