MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains a large number of embedded links, with one identified as a malicious redirector. The ML classifier strongly indicated maliciousness. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=corso+italiano+pdf', which is flagged as a malicious redirector. This suggests the primary purpose is to lure users to malicious sites.
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.ru/pify?keyword=corso+italiano+pdf In PDF document text
- http://files.markmunzertcowboypoet.com/uploads/1/3/1/0/131069879/6837495.pdfIn PDF document text
- http://files.mengshuyou.com/uploads/1/3/0/8/130814066/novunozu.pdfIn PDF document text
- http://files.synergglass.com/uploads/1/3/1/0/131069869/fivajodasikadu_neposidox.pdfIn PDF document text
- http://files.ryanpfouts.com/uploads/1/3/1/4/131438167/343e2010937f36.pdfIn PDF document text
- http://files.progressivepsychologicalservices.com/uploads/1/3/0/7/130775543/4682171.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/1/0440/4091/3046/files/perobabeverategaluviwarod.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4551/9513/files/74789381717.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2065/6545/files/bojuduwobo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2023/0564/files/weluwibifafub.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7706/6140/files/regular_expressions_list.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/7505/2454/files/munodivemonegexexak.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6646/6202/files/49919273952.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0441/1470/6584/files/bertrand_russell_essays.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8677/4436/files/xafisar.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/8826/2821/files/how_to_premove_chess._com.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/2761/8209/files/the_kabbalah_unveiled.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0711/4391/files/dewevusobofakuxakalose.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/3965/3030/files/insanity_fitness_test.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/riwemabosemuridaredexe.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_off00005d82.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5D82 | 4940 bytes |
SHA-256: 6db2d99da5669bd88e9268f35a00a311d3b7b7aa30482b66593b1172361c0fcb |
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font_01_sfnt_off00006e5a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6E5A | 10936 bytes |
SHA-256: 35f5ed30920c9d804c3d8b290f6e926be80f7b56415f27d4d2e449e261ce1d33 |
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