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 pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains this URL and appears to be a lure for a free PDF download. The presence of numerous other links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility. The ML classifier also strongly indicated maliciousness.
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=behavior+modification+principles+and+procedures+5th+edition+free+pdf In PDF document text
- http://files.vertexprofessionalpainting.com/uploads/1/3/2/6/132696174/7361202.pdfIn PDF document text
- http://files.forumartspace.com/uploads/1/3/1/6/131637240/fatuj_vagerarisareded_rifut.pdfIn PDF document text
- http://files.eccai.ca/uploads/1/3/2/7/132740586/boxog-bokitebizaro-nirosenisaminow-ranemebaworefu.pdfIn PDF document text
- http://files.healthpoweredbyyou.com/uploads/1/3/0/7/130776067/butowub.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/1/0432/7833/6165/files/zafuwimixupa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5680/8607/files/99760514010.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5652/8541/files/nodilenemapekitojusifupu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7661/6341/files/dakofivitoxosufok.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/velokiw.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/3609/6150/files/11729099870.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0842/6147/files/80262222335.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/3275/6902/files/77809790425.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2861/9168/files/85269209187.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/8706/8322/files/3426440333.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5817/5893/files/nuxixununegewupelixe.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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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 |
|---|---|---|---|
stream_005_off00008a05.bin |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x8A05 | 23008 bytes |
SHA-256: 0f1cf8f55107d6d0bb9964e0b5b1031076d56aa33635209fec14c39d73ccccac |
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font_00_sfnt_off000055a0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x55A0 | 5628 bytes |
SHA-256: b567380d4b61a87af3cad8ea33ceea3d84db16525ff8d893e1540ed8b693fc63 |
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font_01_sfnt_off000068a9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x68A9 | 9700 bytes |
SHA-256: 110170928153cdd7e73855b6b93c0fcd6e8bf57975a1961ee648404240b3dcb8 |
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