MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link farm designed to appear as legitimate content, but the primary link redirects to malicious infrastructure. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that the URL https://ttraff.com/pify?keyword=calculus+by+howard+anton+5th+edition+pdf is part of a known malicious redirector chain. The document body, though heavily obfuscated, contains this malicious URL and several other benign-looking PDF links, likely to disguise the malicious intent. No scripts were extracted from this sample.
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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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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.com/pify?keyword=calculus+by+howard+anton+5th+edition+pdf In PDF document text
- http://files.ave-design-co.com/uploads/1/3/2/3/132303359/mupuzoju.pdfIn PDF document text
- http://files.welchesterwellness.com/uploads/1/3/1/0/131070718/8132347.pdfIn PDF document text
- http://files.montanalanguageteachers.org/uploads/1/3/1/3/131379217/81740e7af12a7b5.pdfIn PDF document text
- http://files.ridgewaygardendesign.co.uk/uploads/1/3/0/9/130969334/leroxukedinune.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/1/0427/4028/5607/files/27241706374.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4015/3505/files/91070111770.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/7400/9753/files/nopiwimubuwozomufoku.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8436/5476/files/4391980830.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9659/5870/files/zekanatibikorezan.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7028/3173/files/daisy_powerline_340_disassembly.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5870/8118/files/pinivobilodiwozat.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/3359/8880/files/45483737847.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8201/4108/files/47708090386.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/7758/0453/files/hollow_knight_joni_s_blessing.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/61927850068.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9869/3022/files/repabivuwegu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5892/1621/files/gofonakivog.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_off00006be7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6BE7 | 5608 bytes |
SHA-256: 8a7bbba96be22c5e01e4c602ee85805fe9489d6edb0b5f6784283ec082850474 |
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font_01_sfnt_off00007f09.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7F09 | 10436 bytes |
SHA-256: e4b11c20beb5b35101eb92e49ef7f3329b8ecd2c1c1e4d76119a11b54313cb20 |
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