MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many of which point to external files hosted on Shopify. One critical heuristic firing indicates a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be a lure for free downloads, aligning with the observed link farm behavior. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.
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.ru/pify?keyword=autodesk+inventor+tutorial+pdf+free+download In PDF document text
- http://files.ericbramlett.org/uploads/1/3/1/3/131379719/21a74592.pdfIn PDF document text
- http://jozin.rileysrantings.com/uploads/1/3/1/6/131606227/6723621.pdfIn PDF document text
- http://files.taylorgaunt.co.uk/uploads/1/3/0/7/130776111/d6f70d64a66cf47.pdfIn PDF document text
- http://files.pctigerfootball.com/uploads/1/3/1/6/131606598/1d55849.pdfIn PDF document text
- http://tofojaw.lochatuathnews.com/uploads/1/3/1/8/131856333/lawexarijezives.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/1/0448/4084/5469/files/free_download_residential_building_plans.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8153/9489/files/2926626674.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7488/7590/files/40848991231.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7793/5004/files/x_cargo_sport_20.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4610/9341/files/67765795942.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9846/4661/files/zagajufawego.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/6982/3390/files/talalawapedakadakelaluve.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2875/0241/files/ramabepirak.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/8644/4696/files/unir_dos_en_linea.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0447/8559/8615/files/using_dictionary_worksheet.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/3331/0870/files/preliminary_general_maths_textbook.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/7086/2998/files/kobavidiz.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005203.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5203 | 5120 bytes |
SHA-256: 630f2e01d2663c595e03e0ffae559bf8356b55a95195d764ac0c571c01421c50 |
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font_01_sfnt_off00006387.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6387 | 9844 bytes |
SHA-256: 117d1b664d31142a83ca1adebe68bbffb65fe7571b9833349147e0eb9834fff0 |
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font_02_sfnt_off00008541.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8541 | 4324 bytes |
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f |
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