MALICIOUS
242
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF document contains multiple heuristics indicating malicious intent, including links to a known redirector and a large number of external PDF links, suggesting a link farm for SEO manipulation. The document also employs a common social-engineering tactic by presenting a 'download' button lure, aiming to trick users into installing unwanted software or visiting malicious sites. The primary redirector URL is https://ttraff.ru/wb?keyword=pdf%20to%20excel%20converter%20offline%20download.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 7
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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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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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=pdf%20to%20excel%20converter%20offline%20download In PDF document text
- http://files.kamelicounselling.com/uploads/1/3/0/7/130776476/da6162686.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/1/0429/3564/8409/files/64956704404.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/0388/8287/files/kakaotalk_download_mac.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4489/6917/files/kalunavebabu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0453/8662/9288/files/22198471772.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/5359/4277/files/how_to_find_canonical_form_of_pde.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/0646/6982/files/the_taste_of_ink.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/1009/7313/files/botejonowebi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4922/2298/files/naming_acids_and_bases_worksheet_with_answers.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7066/8453/files/paxovubivaseretuvagede.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/0100/4707/files/rusowoxunekozolix.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/0976/7584/files/environmental_impact_assessment.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/2598/7734/files/632816095.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_off000064a7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x64A7 | 5056 bytes |
SHA-256: 727085f1b9041f435d08b2e8e779f4e181a9758d14bbe0282433652013fc8d4e |
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font_01_sfnt_off000075fd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x75FD | 10008 bytes |
SHA-256: 0a0896b39bb07b90f7a026184cd6345a77a6766064e90d860701cf25656af04b |
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