MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains numerous embedded links, including a critical redirector link to 'ttraff.ru', which is flagged as malicious. The document body, though heavily obfuscated, contains text related to a 'Farsi language course pdf' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of a link farm heuristic further indicates a malicious intent to distribute content or redirect users.
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=farsi+language+course+pdf In PDF document text
- http://files.dogamelbourne.com/uploads/1/3/0/8/130814124/9566204.pdfIn PDF document text
- http://files.grissomvb.net/uploads/1/3/1/4/131454556/fawiwaj.pdfIn PDF document text
- http://files.lafontanabocaraton.com/uploads/1/3/2/3/132302830/f65da56cc2.pdfIn PDF document text
- http://files.joannblock.com/uploads/1/3/0/7/130776065/tunujej_bixozuf.pdfIn PDF document text
- http://files.jaydaitkaci.com/uploads/1/3/1/3/131384424/bojumapafub.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/1/0429/6821/9799/files/11425064930.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/1085/0979/files/39253597558.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/2010/8455/files/84887058553.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7369/0017/files/xavibofinuxijixepun.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5715/1129/files/42876941722.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/6397/4805/files/makezun.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6697/3589/files/xabatidufemisaxejini.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0505/8976/files/xogesogefusivit.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/2804/6233/files/76252451665.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/9258/8184/files/87195640530.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
stream_005_off0000f3d0.bin |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0xF3D0 | 24316 bytes |
SHA-256: 690f4d3225da4ea710f0d16c7bf64e5597a2e1e80eec1f80492b6e03e86ae193 |
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font_00_sfnt_off0000bda9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBDA9 | 5080 bytes |
SHA-256: 5e6b9739cf702ff248fc710a770cc95636307d0afa03558b8d039dfee6bb52d6 |
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font_01_sfnt_off0000cef1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCEF1 | 10824 bytes |
SHA-256: 8fde7d123771b7e6dd8116125954762ff403317aa10ca2a42cda0af63719f18e |
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font_03_sfnt_off00011d70.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11D70 | 4324 bytes |
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3 |
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