MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF document contains a link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the same redirector URL and numerous other PDF links, suggesting a link farm for SEO poisoning. The ML classifier also strongly flagged this sample as malicious. The primary attack pattern involves luring the user to click a malicious link under the guise of a legitimate form.
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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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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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.cc/pify?keyword=tricare+east+prior+authorization+form+2020+pdf In PDF document text
- http://files.mealprepdaily.com/uploads/1/3/1/0/131071043/3089382.pdfIn PDF document text
- http://files.3nchallenge.org/uploads/1/3/0/8/130874493/7523588.pdfIn PDF document text
- http://files.stjohnsfruitland.com/uploads/1/3/2/7/132710687/jibitodu.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/1/0430/2045/1997/files/57655415605.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/5193/3078/files/industrial_automation_system.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/8005/5958/files/24143855673.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1381/5966/files/12559133435.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9284441163.pdf?v=1594212706In PDF document text
- https://cdn.shopify.com/s/files/1/0432/7230/6846/files/16706908986.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6716/2276/files/85989075609.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5364/4966/files/mimanozutekotila.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/5982/1209/files/iodine_deficiency_disorders.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/8162/1919/files/57686950586.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/6224/5029/files/bulk_density_of_aggregate_test.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/6997/1363/files/neet_pg_2020_syllabus.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/3458/1911/files/42024037033.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2930/7293/files/56561494036.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_off00006c26.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6C26 | 5636 bytes |
SHA-256: 038b8390f8ecc23cd8d78c04c31d13780432b604de4bdc26949332b8c1632945 |
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font_01_sfnt_off00007f2d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7F2D | 10272 bytes |
SHA-256: 082e75569a71d732d9616534617593e35d90200950835d25af80a3edf56302df |
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