MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file exhibits characteristics of a link farm, with numerous embedded URLs. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=impersonal+passive+voice+exercises+p'. The ML classifier also strongly indicated maliciousness. The document body appears to be heavily obfuscated or corrupted, but the presence of the malicious URL is a strong indicator of a phishing or redirection attack.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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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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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=impersonal+passive+voice+exercises+p In PDF document text
- http://wiraw.francescafitzeventing.com/uploads/1/3/0/9/130969972/1badbff29c.pdfIn PDF document text
- http://files.brunomacdonald.com/uploads/1/3/1/6/131636772/kobamu-mesoxemo.pdfIn PDF document text
- http://neriwodes.brandonroberteck.com/uploads/1/3/1/3/131383813/4965595.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/1/0430/1137/5267/files/sims_4_manual_patch.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97253363073.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2828/2529/files/autotune_free_full_version.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6046/0706/files/plataforma_20_aula_digital_aluno.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4830/4797/files/xemidubo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/loxidunadubufurepetiverox.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/5458/7288/files/buwadetuz.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5743/0176/files/82664358738.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2556/2775/files/letter_tracing_worksheets_with_pictures.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/9571/8040/files/97992523789.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6083/8050/files/hilbert_transform_for_ssb.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8052/3678/files/fegijavijukejagodemixesap.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4642/0136/files/animal_kingdom_coloring_book.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/5905/9615/files/31595473320.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/8022/9791/files/sixagibitinukexed.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_off0000c2a1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC2A1 | 5144 bytes |
SHA-256: 8e723f20154c43cb317d9603d43c159a2215b253b5f962dd5020049dcfdf2f75 |
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font_01_sfnt_off0000d407.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD407 | 10292 bytes |
SHA-256: da52cd4a90184213f0e972aa7e593f5c2a5c44328f17fc288b83ea01613cfda3 |
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