MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous embedded links, many pointing to a redirector service at 'ttraff.ru' which is flagged as malicious. The document body, though heavily obfuscated, suggests a lure related to 'laboratory skills checkup answers'. The presence of a large number of external PDF links, including those hosted on Shopify, indicates a link farm or SEO manipulation tactic to drive traffic to the malicious redirector. The ML classifier also strongly indicated maliciousness.
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=laboratory+skills+checkup+4+identifying+errors+answers In PDF document text
- http://files.spartafbo.com/uploads/1/3/1/3/131383889/zemokevirisebiv_gaperazefame_rivabiditu.pdfIn PDF document text
- http://files.bluemountainwine.com/uploads/1/3/1/4/131407977/3d6cd85253.pdfIn PDF document text
- http://files.sassortingandstaging.com/uploads/1/3/0/9/130969509/b693e2d7891f.pdfIn PDF document text
- http://files.grip-potential.com/uploads/1/3/1/8/131856713/fidub-giralawujaz-kajexene-kadat.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/1/0430/8451/3444/files/josixiviri.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/2666/7925/files/11672668211.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/3387/8940/files/66749757335.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/8544/7833/files/18179212753.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/6929/9098/files/33433016514.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5622/6716/files/zegirusudiw.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7365/9290/files/rinijubixizigu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/8183/2350/files/33413812228.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/4395/3563/files/najaxosetovasetanukilivo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5821/7631/files/48768716043.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6924/3549/files/parubu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/4748/3557/files/gejofakubisaxiz.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fuwakuda.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7168/4252/files/85748382678.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:
bluemountainwine.com
4 samples
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00008eb5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8EB5 | 5728 bytes |
SHA-256: 9f8e0aff96f689a52ceaa56fe3236568abcb7f135047ef1eb76ff492cca8a3a2 |
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font_01_sfnt_off0000a246.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA246 | 14808 bytes |
SHA-256: cf3cdc9a0fd7094e874c4c7b85e56e5ce916acac85236fdd7db2a0b1f3a37e40 |
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