MALICIOUS
214
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF document functions as a lure, presenting itself as a downloadable file but containing a clickable link disguised as content. The primary link, https://ttraff.cc/pify?keyword=precalculus+with+limits+larson+second+edition+pdf, is identified as a malicious redirector. The document also contains a large number of external PDF links, suggesting a link farm intended to manipulate search engine results or distribute further malicious content.
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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Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LUREPDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 35 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
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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=precalculus+with+limits+larson+second+edition+pdf In PDF document text
- http://files.habitatlacrosse.org/uploads/1/3/1/6/131606006/mowidibuw-dibojuzisawega.pdfIn PDF document text
- http://files.washington-commons.org/uploads/1/3/0/8/130814411/xulem_pujifajikizuv.pdfIn PDF document text
- http://files.winterra.ca/uploads/1/3/1/0/131070894/vitesi-kuwus-fikudeworodub-fopujazunap.pdfIn PDF document text
- http://files.temperanceparkequestrian.com/uploads/1/3/0/7/130738673/nafubimon.pdfIn PDF document text
- http://www.LarsonPrecalculus.comIn 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/1/0433/9780/8279/files/valurosumuvamimofif.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/1355/4855/files/sukifosokutisawofom.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/6743/1320/files/vipejeretos.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/3197/0460/files/75283207721.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8266/9461/files/83066021379.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5337/5897/files/51435046713.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6300/8661/files/sesibamawexufulevo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/8360/4903/files/jivisaxibuzuvigepewese.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9112/4643/files/54735578419.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/8035/8815/files/rosod.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5064/7202/files/lipalazoloxipokotibajibek.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8342/3128/files/jozipokozife.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/8688/9625/files/95883650940.pdfIn PDF document text
- https://www.nxtbook.com/nxtbooks/ngsp/finanIn 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_off00005221.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5221 | 5488 bytes |
SHA-256: e623f167094f98bf39763a5de9d284841047cc931a33c83114ba6ddf45a1d00e |
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font_01_sfnt_off000064b0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x64B0 | 8332 bytes |
SHA-256: c7f1e7d78a648f43210571df12c2a6b9520f0f68b2e621ffc3f64fd88e5d0ae6 |
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