MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file contains numerous links to external PDF files, presented as a 'biology books pdf' download lure. The primary link directs to a known malicious redirector, which likely serves as a gateway to further malicious content or phishing pages. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests an attempt to distribute malware or phish users.
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.com/wb?keyword=biology%20books%20pdf In PDF document text
- http://files.tallsmallproductions.org/uploads/1/3/1/3/131383207/969711.pdfIn PDF document text
- http://files.wicklow.coralleisure.ie/uploads/1/3/0/8/130874541/7906750.pdfIn PDF document text
- http://files.sbcopywriting.com/uploads/1/3/2/7/132740218/644292.pdfIn PDF document text
- http://files.okotokshcpharmacy.com/uploads/1/3/1/4/131408537/muwukuxum-lumuvotaxol-zokezodosebap-luretipinonobux.pdfIn PDF document text
- http://files.medhanialemla.com/uploads/1/3/2/6/132682646/zozilikolajojix_lizeporugowiwad_lopabo_wavarujufomu.pdfIn PDF document text
- http://files.spooksinvestigations.com/uploads/1/3/1/4/131437376/d0a4d.pdfIn PDF document text
- http://files.paqu.org/uploads/1/3/1/8/131871894/vibofukupu_ruzererijolibij.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://sotarobimubu.files.wordpress.com/2020/06/bejutaruberap.pdfIn PDF document text
- https://vekesifuwozu.files.wordpress.com/2020/06/nowuzavizurevirori.pdfIn PDF document text
- https://nijarabukexi809583250.files.wordpress.com/2020/06/sekobikolorusewafitu.pdfIn PDF document text
- https://zetimoximuti.files.wordpress.com/2020/06/vedokebabojagunozasefexod.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87463685859.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/3260/0985/files/92194386988.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85286147205.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/94215193789.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jerozex.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fulefevizurosojasi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5877/3662/files/38146331871.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45235944591.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9496/6429/files/livefonositivaserus.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 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000081f4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x81F4 | 4744 bytes |
SHA-256: 587855db0a1a3141537d2252b15ba30864792ff946b73632a1382013d826e535 |
|||
font_01_sfnt_off00009210.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9210 | 10316 bytes |
SHA-256: c0e6d064b1b8066a6cb48b446ed532ea879cb7a07b0ce06eb29e5906eba19324 |
|||
Open this report in the interactive analyzer, or submit your own file for analysis.