MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF contains a link farm designed to appear as legitimate exercise PDFs, but the primary link redirects to a malicious redirector. The embedded URL `https://ttraff.cc/pify?keyword=analise+combinatoria+exercicios+pdf` is a critical indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. The presence of numerous other PDF links, many hosted on Shopify, suggests a coordinated effort to manipulate search engine results or distribute malicious content.
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.cc/pify?keyword=analise+combinatoria+exercicios+pdf In PDF document text
- http://files.nickcoulston.com/uploads/1/3/1/1/131163867/tibudipen_xazivodamajaf.pdfIn PDF document text
- http://files.merriemoore.com/uploads/1/3/0/7/130775607/2385496.pdfIn PDF document text
- http://files.yogashak.com/uploads/1/3/0/9/130969910/zevuru.pdfIn PDF document text
- http://files.pasaliphilippines.org/uploads/1/3/0/7/130739204/f0bcfd5aa.pdfIn PDF document text
- http://kerolewo.puerhbrooklyn.com/uploads/1/3/0/7/130776031/mefovuked.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/1/0430/1471/7597/files/79322692539.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1237/4174/files/gusazikigugojafer.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/3696/5026/files/lima_zip_code.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0378/1013/files/36762498098.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6762/1028/files/tapiwibopovoviwuxowodu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0378/1015/files/64254731713.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0445/2987/7151/files/cefaclor_suspensao_bula.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/8524/1245/files/vexoremazesurugu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3278/0695/files/bless_the_lord_lyrics_and_chords.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6521/3089/files/79183199320.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/3073/1173/files/bnficiaire_effectif_d_une_socit.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6625/3724/files/tuxutikorozeledunagedep.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0708/1622/files/22863881595.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_off00006d53.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6D53 | 5496 bytes |
SHA-256: de065496f49320f51abffabec7ed6e108c637b3ac4b8c09e2c1b656e6df7910d |
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font_01_sfnt_off00007fea.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7FEA | 10060 bytes |
SHA-256: b80d4df494861285220e2ded75bc3eb1f755dafb2fa0da4e89a831e08fbd5ce1 |
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