MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a link farm designed to appear as a free download for educational materials, but it redirects to known malicious infrastructure. The primary malicious URL is https://ttraff.cc/wb?keyword=olympiad%20books%20for%20class%2010%20pdf%20free%20download. The document body itself is heavily obfuscated but contains references to the malicious URL and numerous benign-looking PDF links hosted on Shopify, likely to improve search engine ranking and mask malicious intent.
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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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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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.cc/wb?keyword=olympiad%20books%20for%20class%2010%20pdf%20free%20download In PDF document text
- http://files.sorrowfulmother.net/uploads/1/3/0/8/130814258/lalek_filolaxesidepeb_razefenelofe_wotaguvod.pdfIn PDF document text
- http://pakariti.mattiasgraves.com/uploads/1/3/0/8/130814106/88a20d.pdfIn PDF document text
- http://domeno.lincolnleapers.com/uploads/1/3/0/7/130775734/xosudifud.pdfIn PDF document text
- http://files.mystreetstamp.com/uploads/1/3/1/3/131379567/jegodadafutasaza.pdfIn PDF document text
- http://files.dcchurchofchrist.org/uploads/1/3/1/1/131164446/1ec552f4181.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/1/0437/0386/1416/files/tovidorilos.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0342/0570/files/temimatek.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4715/7911/files/66050584409.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/3893/1109/files/renemoreboga.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/1021/2519/files/guferanozokenavak.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/9097/5647/files/57995481602.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7341/3032/files/41008973285.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0447/8281/3341/files/cs_lewis_cristianismo_puro_e_simples.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5313/7576/files/rilamojef.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/0252/5856/files/4562364199.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20807514836.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3156/0354/files/21880763387.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
🗂 Part of campaign:
lincolnleapers.com
4 samples
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006c5e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6C5E | 5920 bytes |
SHA-256: 398f4494a1ace70003449211dc1fc445a18b2890af1499e83d00251abcd598bd |
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font_01_sfnt_off00008080.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8080 | 10188 bytes |
SHA-256: 06b44a4633ae32c998e6f16d82c9ff38037a44dff7d0196b55533bdc6466de5e |
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