MALICIOUS
182
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF contains heuristics indicating it's a malicious redirector link and uses an advance-fee scam lure, promising a free PDF download. The embedded URL, https://ttraff.cc/pify?keyword=lubert+stryer+biochemistry+pdf+free+download, is flagged as a known malicious redirector. The document body also contains this URL, reinforcing the lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9705
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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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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Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LUREDocument tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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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=lubert+stryer+biochemistry+pdf+free+download In PDF document text
- http://wifugosir.rockymountainautoparts.com/uploads/1/3/1/1/131163635/vusivajefimo_bedazefizemut_pekuxenuwesebo_zadaduwidale.pdfIn PDF document text
- http://files.shininglightnetwork.com/uploads/1/3/1/8/131871554/zafugugemefi-tuwiwos-kasomesexejegi.pdfIn PDF document text
- http://nimosawov.adambagleyillustration.com/uploads/1/3/0/7/130775934/sujufunitirem_tekimotidisonu_pobozevani_marepepudoxol.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/1/0434/7900/7398/files/angularjs_make_header.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/6826/7423/files/78670167333.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7761/5262/files/sinifeti.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69440205977.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/0667/9447/files/21790630914.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/0543/6326/files/zerijukasuzixepar.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5782/4419/files/vanunivavibemepijarurusi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5038/5051/files/solija.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/6897/1418/files/56420789194.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5820/0725/files/85699521135.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34292265756.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3817/0526/files/88374317687.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/3170/5238/files/11025663893.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7395/4204/files/andhra_bank_borrower_s_statement.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3438/6332/files/wajefozatumadowaxeme.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_off000881e9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x881E9 | 5668 bytes |
SHA-256: 5eaee8c0a55e9698500f40c77698502ef9318df7f41929e85f47df513586abc8 |
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font_01_sfnt_off00089530.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x89530 | 17584 bytes |
SHA-256: 7543a069fef92ae26f6d25ed411e4e254b2f933adfdbad2761c8f2c8f87e03e5 |
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