MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous external links, with a critical heuristic flagging it as a 'PDF_SEO_LINK_FARM' and 'PDF_SEO_UTM_REDIRECTOR_LINK'. One prominent URL, 'https://trafftec.ru/123?utm_term=trends+in+the+periodic+table+quiz+answers', is identified as a redirector. The ML classifier and ClamAV also flagged this PDF as malicious, indicating a phishing or trojan-like behavior. While no scripts were explicitly extracted, the structure suggests an attempt to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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://trafftec.ru/123?utm_term=trends+in+the+periodic+table+quiz+answers PDF link annotation
- https://static.s123-cdn-static.com/uploads/4387427/normal_5fc927df89aab.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365599/normal_5f872f1b3bcd1.pdfIn PDF document text
- https://xezuzevujuniz.weebly.com/uploads/1/3/4/5/134586082/dumipiw_gujedexovetox_jubamupem.pdfIn PDF document text
- https://bitokulizawefe.weebly.com/uploads/1/3/4/6/134684274/masezutotuvo_zewevopemasubep_kinikexolupox_pawevefexafoja.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4481676/normal_5fc522296832d.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://s3.amazonaws.com/jotizifime/55818798389.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8f260f4b-5b24-47e1-a6bc-82744713f732/98322521898.pdfIn PDF document text
- https://s3.amazonaws.com/kifutizijebuj/baptist_history_and_distinctives.pdfIn PDF document text
- https://static1.squarespace.com/static/5fc0d2f2d26ff1194f734ddd/t/5fca896f944ec9462b3fa226/1607108976099/petarakopimapovawomemax.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/66067818-a7b4-4054-9cd9-66019f613026/java_string_to_byte_array.pdfIn PDF document text
- https://s3.amazonaws.com/gadumagabusodel/windows_10_dos_commands_list_drives.pdfIn PDF document text
- https://s3.amazonaws.com/sewamos/66332375593.pdfIn PDF document text
- https://s3.amazonaws.com/setigafat/pebexedezarunuvu.pdfIn PDF document text
- https://s3.amazonaws.com/litunux/dekakixarad.pdfIn PDF document text
- https://s3.amazonaws.com/juliziwojatige/double_kick_pedal_cheap.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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d0cf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD0CF | 5400 bytes |
SHA-256: 774183f6047dc3c73ee24635c110d54ab1c69705e83b5bc68438fb0fae4de306 |
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font_01_sfnt_off0000e32a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE32A | 10248 bytes |
SHA-256: 9f2946e1f116daac86aa7d74cba058d21a4565f169e78f00da7f3535828343ea |
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font_02_sfnt_off0001063a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1063A | 4324 bytes |
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2 |
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