MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=university+calculus+early+transcendentals+2nd+edition+solutions+manual+pdf'. This URL is presented within the document body, disguised as a link to a calculus textbook solutions manual. The redirector likely leads to further malicious content or downloads. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, suggesting an attempt to distribute malicious links broadly.
Machine Learning
- Nyx PDF Classifier malicious score 0.9999
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=university+calculus+early+transcendentals+2nd+edition+solutions+manual+pdf In PDF document text
- http://files.bvl.ca/uploads/1/3/1/8/131856476/2991430.pdfIn PDF document text
- http://files.housingamericacampaign.org/uploads/1/3/1/4/131437878/jareru.pdfIn PDF document text
- http://files.yoansewingstudio.com/uploads/1/3/1/4/131437295/5621048.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0431/1266/1152/files/depodezadomojezopidun.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0849/1673/files/cable_tray_price_list.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7245/3797/files/9475338667.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/7712/2713/files/kogodakapibameputonigi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/0437/7757/files/aileen_wuornos_book.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7780/3925/files/66513226455.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/6604/1244/files/84089979548.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/60801944673.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/8750/4294/files/camera_follow_script_unity.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8054/8503/files/gapuzivuvib.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/1358/5566/files/wekefilixojizepekogafiru.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00018cc6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x18CC6 | 5468 bytes |
SHA-256: 1ac927e3904aa8e0852c6a7ce9344c9ed800ec358a5ba35988560d44dfeb6e7f |
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font_01_sfnt_off00019f4f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x19F4F | 17788 bytes |
SHA-256: ec18ae3cd523c5a681fd1de7a02a568dcb88337a4f8c71d3c41e9cf77ec37309 |
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font_02_sfnt_off0001d6da.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1D6DA | 16148 bytes |
SHA-256: ebaa9d42c58e3fd25c8264bcf4ef2319fee467c92cf53dcc1f377a20fc8d39b0 |
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font_03_sfnt_off0001ebd2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1EBD2 | 4324 bytes |
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333 |
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