MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous links to an SEO redirector, specifically `https://ttraff.ru/wb?keyword=sequence%20and%20series%20calculus%20pdf`, which is flagged as malicious. This indicates a phishing or scam attempt disguised as educational content. The presence of many links to external PDFs, including benign ones on Shopify, suggests a link farm designed to improve search engine ranking for malicious redirectors. No scripts were extracted, but the overall structure points to a spearphishing attachment.
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.ru/wb?keyword=sequence%20and%20series%20calculus%20pdf In PDF document text
- http://files.art-rogue.com/uploads/1/3/0/9/130969368/kudugadobejufax.pdfIn PDF document text
- http://files.harmonautoinsurance.com/uploads/1/3/1/0/131071249/3663888.pdfIn PDF document text
- http://pebovo.susanmcguire.ca/uploads/1/3/1/1/131164447/fakogikekinenederate.pdfIn PDF document text
- http://files.velolumino.com/uploads/1/3/0/7/130740062/mufulejod_kexukazorivi.pdfIn PDF document text
- http://zebos.patrickwboyerjr.com/uploads/1/3/0/8/130874222/sadenuvuzexedepamas.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0428/9373/8143/files/jozivevomizajifepoxiv.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/3538/4225/files/manhattan_logic_games.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5811/9334/files/77229187336.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/3325/6345/files/10819356581.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7441/0901/files/vasis.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/7730/2427/files/sevijafudibaraxixozil.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5031/1579/files/satavinexivareruvu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lubogalevomiwubojaxijafax.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5857/7046/files/34387172355.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/0525/4566/files/xakak.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5197/4818/files/cours_japonais_gratuit.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/6706/1910/files/remington_model_8.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/1607/7991/files/56293400648.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f492.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF492 | 5072 bytes |
SHA-256: 87244121cea14b4834e80d4455131d3f555405e075f3dbc90e3b6cb19bbb9f70 |
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font_01_sfnt_off000105cd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x105CD | 16380 bytes |
SHA-256: a6ca8d1c0f4cee7d614fd3aee9ec190982ed538bd223afdd1db3a370884a8995 |
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font_02_sfnt_off000139a2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x139A2 | 16592 bytes |
SHA-256: 72edccc4a97f4dff4f020a219a46f7fdb477537bcc00df00b8e0733da3a7bcdd |
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font_03_sfnt_off0001507c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1507C | 4324 bytes |
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176 |
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