MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many of which point to external PDFs hosted on various domains, indicating a link farm for SEO manipulation or malware distribution. One critical heuristic identified a link to a known malicious redirector infrastructure at `https://ttraff.cc/wb?keyword=acute%20lymphoblastic%20leukemia%20diagnosis%20pdf`. The document body, though partially corrupted, contains text related to medical diagnosis and the authoring application, suggesting a lure to disguise the malicious intent. No scripts were extracted from this sample.
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.cc/wb?keyword=acute%20lymphoblastic%20leukemia%20diagnosis%20pdf In PDF document text
- http://files.louisehallart.com/uploads/1/3/1/6/131637125/b6762a04f5ca.pdfIn PDF document text
- http://zizomo.letspaintthisparties.com/uploads/1/3/2/6/132682646/1b17a98.pdfIn PDF document text
- http://gerezo.eranthelaw.com/uploads/1/3/0/8/130874493/716d3c4427.pdfIn PDF document text
- http://files.lowereastsideheroines.com/uploads/1/3/1/6/131607575/611e1af3cf0.pdfIn PDF document text
- http://lojodexa.suwastikanaidu.com/uploads/1/3/0/9/130969723/tosudojoxobaxaxusul.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/1/0433/7870/4536/files/pudunubiketipup.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1993/5655/files/musuledefiravuxu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/8362/0757/files/53518122071.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/7689/5398/files/cahier_de_charge_application_web.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7002/8966/files/react_native_reset_cache.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/7689/5398/files/68818600645.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/9628/6111/files/90766033591.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5970/8058/files/puxidoxiviwupikola.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4715/7911/files/fagijirivew.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/0524/5597/files/algorithms_and_flowcharts_examples.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0905/6666/files/sipawititetatak.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0448/5015/1584/files/masterbuilt_smoked_turkey.pdfIn PDF document text
- https://medlineplus.gov/acutelymphocyticleukemia.htmlIn 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_off00006d3d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6D3D | 5652 bytes |
SHA-256: dfc1a8fa68edd21730c5b8c047e4402a16372862b63ac1ce256e8471112a505a |
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font_01_sfnt_off00008058.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8058 | 10224 bytes |
SHA-256: 6ea7ac991b1f20ce26b1e50f4220267a7c89083f17fb3d21411772fe32fe9ff0 |
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font_02_sfnt_off0000a33a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA33A | 4324 bytes |
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378 |
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