MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, suggests a 'worksheet' lure. The primary attack vector appears to be directing users to malicious sites via embedded links.
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.com/pify?keyword=microscopic+structure+of+bone+and+cartilage+worksheet In PDF document text
- http://files.360signs.com/uploads/1/3/2/7/132712514/regal.pdfIn PDF document text
- http://files.cateringandcreations.net/uploads/1/3/0/8/130814513/9295549.pdfIn PDF document text
- http://files.drjdechert.com/uploads/1/3/0/7/130738823/1ceb79.pdfIn PDF document text
- http://files.northlinecattle.com/uploads/1/3/0/7/130776351/7456983.pdfIn PDF document text
- http://files.ayeeprettyblack.com/uploads/1/3/0/7/130738548/3995609.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/1/0430/3287/1074/files/15863129233.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5726/7359/files/sumovonevorikonurukamapo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2962/6017/files/vosumeva.pdfIn PDF document text
- https://mapikupe.files.wordpress.com/2020/07/raxizokekimukenegotan.pdfIn PDF document text
- https://vosonowa.files.wordpress.com/2020/07/72293876643.pdfIn PDF document text
- https://sajolesogiw.files.wordpress.com/2020/06/vitekojemarufeku.pdfIn PDF document text
- https://nozikop.files.wordpress.com/2020/06/ripofunowotabi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2753/7828/files/puzozogomanomemonugeb.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/7427/3948/files/9308341533.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6993/9612/files/vufikiwaderaf.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2681/6932/files/jujerefixu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/9146/7176/files/toxuwudisomajonuva.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/0844/8919/files/3977716987.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1415/2607/files/10607772736.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 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00009943.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9943 | 5600 bytes |
SHA-256: 7b0ac71d93e2fd6ec5aa08794122512d290d56fccf8adbac9175677cfc81bf07 |
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font_01_sfnt_off0000ac55.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAC55 | 10048 bytes |
SHA-256: 9109a1130472e1a543ff6b8fb5c9fdc77c0894a90030ed2ac3d2dedd02437fa6 |
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