MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL and a reference to a chemistry book, suggesting a lure. The presence of numerous embedded links, many pointing to Shopify, indicates a link farm strategy. The ML classifier also flagged this PDF with high confidence.
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.ru/pify?keyword=state+board+11th+chemistry+book+pdf In PDF document text
- http://files.komisar.com/uploads/1/3/0/7/130739621/8046234.pdfIn PDF document text
- http://files.traumatwelve.com/uploads/1/3/1/4/131438397/1399987.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://fedorahosted.org/lohitIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/6237/6088/files/mobotabisotuluti.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9636/7511/files/casio_protrek_prg_270_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/7154/6279/files/46630816009.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/0409/2828/files/7560374307.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mupuxisupevijerabufogete.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6577/8080/files/16056514038.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/9349/8787/files/letter_of_guardianship.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6127/1959/files/30963310048.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/3393/6547/files/nodexu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/6686/0455/files/zsh_command_not_found_gulp.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1586/3447/files/98922495823.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3033/8966/files/physical_chemistry_a_molecular_approach.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
- https://savannah.gnu.org/projects/freefont/In PDF document text
- http://www.gnu.org/licenses/In PDF document text
- http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00007559.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7559 | 6440 bytes |
SHA-256: 3d4760ca295192c89086870ebbac49c5a5945404ea6ab57fca452cf2db5f569a |
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font_01_sfnt_off0000854d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x854D | 5824 bytes |
SHA-256: 58daf1abe5a6baa3c8a974f73426ae7a323afb09069893c32f7a31cbdd657d4a |
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font_02_sfnt_off000098fd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x98FD | 10296 bytes |
SHA-256: c6c8ff925eb15421d9abfdcd352b0aa082fb810a7cb6cba4b2896117b6828ca3 |
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font_03_sfnt_off0000bc4f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBC4F | 10596 bytes |
SHA-256: 383349637e9a5b7743423a88d059fbbdabd5f1d1dd1547196ad694b08b6306e2 |
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