MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL. The presence of a large number of embedded external links, many hosted on shopify.com, suggests a link farm or SEO poisoning tactic to disguise the malicious redirector. The ML classifier also strongly flagged this PDF as malicious.
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/pify?keyword=frontiers+in+immunology+guide+for+authors In PDF document text
- http://files.emeraldis.org/uploads/1/3/0/7/130776423/5035716.pdfIn PDF document text
- http://files.greenbrierconcours.com/uploads/1/3/0/8/130874646/1762448.pdfIn PDF document text
- http://files.gianfuffo.org/uploads/1/3/1/6/131636954/6294539.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/1/0431/9887/3762/files/45905444761.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1543/7468/files/mizutozeder.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/5316/1367/files/mathematics_teacher_cv.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0444/8750/8135/files/azure_information_protection_adobe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/4068/4697/files/23532363037.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4774/6721/files/65104853531.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/1434/8197/files/97670025685.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/0327/3628/files/tactics_for_listening_free_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pesaveput.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/3191/0810/files/edema_pulmonar_perros.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/0812/1242/files/66004721883.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4276/7001/files/dovudemobogabasizotoperik.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6887/5157/files/57540217904.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2448/1431/files/calidad_del_aire_en_mexico.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6845/7122/files/23496518011.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000a73d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA73D | 19492 bytes |
SHA-256: 1e139a55f54eb507cbb7492077ef5aff90bba7fb380ceee2cef3fe7f9ebd27be |
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font_01_sfnt_off0000e43b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE43B | 5260 bytes |
SHA-256: 6f908859ac5ba2acdbf7c90fe9119829a10df91e420f1f562a55247462c4a62f |
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font_02_sfnt_off0000f5ef.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5EF | 10696 bytes |
SHA-256: ab51e08200455ca8ef6435465abad5623a3ac64edb9fe909b6bf687ff1ce1ddc |
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font_03_sfnt_off00011a7a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A7A | 4324 bytes |
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230 |
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