MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of external links, many of which point to a link farm hosted on ttraff.cc. This heuristic, combined with the ML classifier flagging the PDF as malicious, strongly suggests a malicious intent to redirect users to potentially harmful content. The document body itself is heavily obfuscated and contains the primary redirect URL.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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.cc/pify?keyword=analisi+logica+esercizi+pdf In PDF document text
- http://files.hilmarlumber.com/uploads/1/3/1/3/131379183/buvevapu.pdfIn PDF document text
- http://files.thewackywitchcupcakecandlefactory.com/uploads/1/3/0/7/130739143/053ebd4.pdfIn PDF document text
- http://files.drumvoice.org/uploads/1/3/0/8/130874451/gidek_gikovobo_zifaxexeka.pdfIn PDF document text
- http://zikerepu.stearnsturns.com/uploads/1/3/0/7/130739777/f53424.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/3029/9292/files/72468909516.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/3025/6536/files/zalemabiraxamaxud.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/1519/0181/files/navodaya_answer_sheet_sample.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/3171/4199/files/wuwofekaxenumoru.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/2920/6939/files/49359415064.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9853/0202/files/fekoj.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7016/8986/files/jozokemo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/4016/2460/files/actor_selva_movie.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/8938/5885/files/kafewedudeludibum.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7303/4654/files/65777179287.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/2135/3635/files/visawirozepimufoke.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000a628.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA628 | 5364 bytes |
SHA-256: 2a744aea0eb59f72b7b0ee74d85b32a4d09d653119713cb33aac84c6eedc9a4d |
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font_01_sfnt_off0000b873.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB873 | 11604 bytes |
SHA-256: 24fbb534e5c69d2256479455369c69c2b5b8b80524f93a3164948aebb6621832 |
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font_02_sfnt_off0000de60.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE60 | 16204 bytes |
SHA-256: 0318b400cbd4eb80818b7eb131bcca2e18f343f850c5eb1573e525fea31f4d56 |
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