MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains the same URL and text related to a calculus textbook solution manual, indicating a social engineering lure. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on cdn.shopify.com, suggesting an attempt to distribute malicious content or manipulate search engine results.
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=calculus+early+transcendentals+11th+edition+solution+manual+pdf In PDF document text
- http://files.maggiemccabeart.com/uploads/1/3/1/4/131406739/gavakok.pdfIn PDF document text
- http://files.ultimatepalestine.com/uploads/1/3/1/4/131414240/2723728.pdfIn PDF document text
- http://files.werribeegymnastics.com.au/uploads/1/3/0/7/130738912/filikiziz.pdfIn PDF document text
- http://files.gmp777.net/uploads/1/3/1/4/131437584/sazubipe.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/1/0435/1832/8991/files/tinar.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7742/7609/files/bapesebopulifofetigot.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8451/3440/files/zavotabufigedijam.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5313/7576/files/wajapivulitelojiravug.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4426/5366/files/busaruf.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0447/8684/3799/files/bank_clerk_exam_syllabus_2020.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0088/8469/files/99373804693.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/9018/9215/files/avalanche_breakdown_in_zener_diode.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/8693/0329/files/antibiotics_list_with_their_uses.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4517/4939/files/dimunativ.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
- https://savannah.gnu.org/projects/freefont/In PDF document text
- http://www.gnu.org/licenses/In PDF document text
- http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000131a0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x131A0 | 5452 bytes |
SHA-256: 7849f96cd26c39457511a4baeb5206e30add5e7a65822cbb7275894746b7c0a3 |
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font_01_sfnt_off00014407.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14407 | 16152 bytes |
SHA-256: a5275284e823cf5e35a9d49e8fc4494c759771558d72947dcf825863c9c1f69e |
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font_02_sfnt_off000176e3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x176E3 | 16072 bytes |
SHA-256: caea212bfaaf2897f4851770f673d25c90b0e412378cb4b0d6f36fafa9739068 |
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font_03_sfnt_off00018b81.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x18B81 | 6076 bytes |
SHA-256: 820851b731abc509e86fd424ecb961d9d709cc5bf8777c35c00b4009ecb0103c |
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