MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.ru', which is designed to lure users with a fake 'Cambridge English book a2 pdf' search term. The document body, though heavily corrupted, contains the same URL and references to 'wkhtmltopdf', suggesting it was generated by a tool for malicious purposes. The presence of numerous external PDF links further indicates a link farm or redirection scheme.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
-
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.
-
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.
-
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.
-
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.
-
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=cambridge+english+book+a2+pdf In PDF document text
- http://files.fiveoaksswimclub.org/uploads/1/3/1/4/131452944/368726e5565d.pdfIn PDF document text
- http://files.compressionsllc.com/uploads/1/3/1/4/131438501/99dde2e33b4.pdfIn PDF document text
- http://files.purpleinkpublishing.com/uploads/1/3/1/4/131437844/mikofoxaxomojope.pdfIn PDF document text
- http://josolovev.episcopalhawaiinews.org/uploads/1/3/1/4/131438641/ledaz_menasugivi.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/1/0429/6074/8695/files/pejoriraxiputavinin.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/7817/3343/files/92661194772.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89709194360.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9726/8128/files/sajimulodurowemux.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/1332/5471/files/mojegerutejukav.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6910/4540/files/80992845587.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/4763/3575/files/47317924325.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2584/1821/files/zenaxanopadomitolun.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2626/7806/files/58701790956.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7634/6266/files/jikasubopozu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6586/8437/files/bernard_baruch_my_own_story.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/0421/4942/files/54939278001.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0448/1341/8662/files/econometrics_by_example_free_download.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_off000046dd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x46DD | 5524 bytes |
SHA-256: 3df10b07f8ed16b27eddef85724e3b96e81bde1e3787fba45c54271f31c0e494 |
|||
font_01_sfnt_off0000596f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x596F | 9744 bytes |
SHA-256: 7e2a68ac93c1dca742e134b615971e8fecad2c58e0da47f2a70eaac271b8a436 |
|||
font_02_sfnt_off00007abb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7ABB | 4324 bytes |
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378 |
|||
Open this report in the interactive analyzer, or submit your own file for analysis.