MALICIOUS
152
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 PDF files hosted on various domains, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to a known malicious redirector infrastructure at https://ttraff.com/wb?keyword=invertebrate%20zoology%20pdf%20book. The document body also contains this URL, reinforcing the lure to a potentially malicious site disguised as a book download.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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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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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/wb?keyword=invertebrate%20zoology%20pdf%20book
- http://files.worldiqchallenge.com/uploads/1/3/1/4/131438308/02dc5242.pdf
- http://vuvajovu.biophilicdesign.net/uploads/1/3/1/3/131398140/migujitaxo.pdf
- http://files.fudosanbunka.com/uploads/1/3/1/4/131483719/nulovapipifer.pdf
- http://pejajo.estebanfj.com/uploads/1/3/0/7/130776542/169e4.pdf
- https://cdn.shopify.com/s/files/1/0432/8544/6824/files/bewezeger.pdf
- https://cdn.shopify.com/s/files/1/0434/6930/8061/files/agama_islam_kelas_10.pdf
- https://cdn.shopify.com/s/files/1/0448/4520/3618/files/burger_king_gutscheine_juli_2020.pdf
- https://cdn.shopify.com/s/files/1/0431/2127/9138/files/nefaxi.pdf
- https://cdn.shopify.com/s/files/1/0435/1007/1460/files/soccer_referee_score_sheet.pdf
- https://cdn.shopify.com/s/files/1/0434/6429/4557/files/zotedak.pdf
- https://cdn.shopify.com/s/files/1/0431/2521/1296/files/pokitolen.pdf
- https://cdn.shopify.com/s/files/1/0429/8178/5753/files/pogedefewenigigozolepeke.pdf
- https://cdn.shopify.com/s/files/1/0428/2885/7503/files/medicinal_chemistry_of_anticancer_drugs_free.pdf
- https://cdn.shopify.com/s/files/1/0438/5495/4656/files/student_council_president_speech.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00004fc2.bin5836ca20d280a102bd24cf8be021195e3667f26ca7a64d5ba7b255e58267a580 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4FC2 | 5384 bytes |
font_01_sfnt_off0000622f.bin85c14a5380e7f2dec8e276120235915de87eb95da1dc9fbfb730e43abdc224ce |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x622F | 9736 bytes |
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