MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was identified as malicious by multiple heuristics, including PDF_SEO_LINK_FARM and ML_NYX_PDF_MALICIOUS. It contains numerous external links, with a primary redirector pointing to 'trafffe.ru'. This suggests an attempt to lure users to potentially malicious sites, likely for phishing or to download further malware. The presence of embedded links and the overall structure indicate a phishing or link-farming attack vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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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External URI info PDF_URIPDF contains an external URL action
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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://trafffe.ru/aws?utm_term=google+spreadsheet+sumif+between+dates PDF link annotation
- https://fetofopup.weebly.com/uploads/1/3/4/5/134507679/dulapel.pdfIn PDF document text
- https://pajedurozibije.weebly.com/uploads/1/3/4/4/134446399/8837608.pdfIn PDF document text
- https://xukaxikerebata.weebly.com/uploads/1/3/4/0/134042698/0f75e5de041473.pdfIn PDF document text
- https://muropezevoride.weebly.com/uploads/1/3/4/5/134514904/punud-zatikaw.pdfIn PDF document text
- https://posepopofag.weebly.com/uploads/1/3/4/6/134609660/9976520.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/ee406f2c-a79b-49fd-a415-748120522950/napaki.pdfIn PDF document text
- https://s3.amazonaws.com/napisakaluja/97878094920.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ac7dcef0-514c-438a-b5ae-547ce84ee8db/american_short_story_masterpieces_ta.pdfIn PDF document text
- https://s3.amazonaws.com/vavapekadoliti/manual_lymph_drainage_breast_cancer.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/63bd8f50-5382-4a0a-8c61-1a74223c9960/79387469622.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2eed1ebe-ee8d-4f4a-abcb-94d797439710/cheat_engine_5.5.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9fefa9b6-dcf5-4cdc-8ea4-427b3194117d/introduccion_a_las_relaciones_internacionales.pdfIn PDF document text
- https://s3.amazonaws.com/mijumomub/vubiliripazabomuwajiv.pdfIn PDF document text
- https://s3.amazonaws.com/gedimuta/turbidity_water_quality_measurement.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_004_off00012e97.bin |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x12E97 | 28148 bytes |
SHA-256: ffeb10f1a6d84ff9bc27eb2525d9553935dbabe6268a9726a3b97c6585a634f1 |
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font_00_sfnt_off0000f47e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF47E | 5720 bytes |
SHA-256: 99bf796f23078534c30bcd5574868402c7ef7308020aad8fdc0e2fd06410b37b |
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font_01_sfnt_off000107dc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x107DC | 11292 bytes |
SHA-256: e362f3b21e322e78d3acfafdabcac84bf79dade7da94432121851d9a55106be7 |
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