MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc', which is used in a lure for 'digital logic design pdf free download'. Additionally, a PDF link farm heuristic indicates the presence of numerous external links, many pointing to Shopify domains, suggesting an attempt to obscure the malicious redirector or to appear as a legitimate resource. The presence of a download button lure further supports the deceptive nature of the document.
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.cc/wix?keyword=digital+logic+design+pdf+free+download In PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://fedorahosted.org/lohitIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/5341/4565/files/circulatory_system_notes.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5744/6041/files/62338906906.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4472/4133/files/16725299693.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9997/9930/files/55336244545.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/3599/0936/files/activities_for_very_young_learners.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0455/7062/1605/files/animal_classification_word_search.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7304/3622/files/vapor_compression_refrigeration_cycle_problems.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7018/5879/files/trade_and_balance_of_payments.pdfIn PDF document text
- https://static.usrfiles.com/ugd/0dd040_a5a05eb096f94b76a7a9577fa6594f07.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_a869920c2be9433d96f3d89cfd14d061.pdfIn PDF document text
- https://static.usrfiles.com/ugd/ea9bdf_861c7c9953b14705a778b3dcff192595.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/8125/3535/files/free_worksheets_for_third_grade_read.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/7708/2019/files/24553287684.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 5
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006732.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6732 | 5416 bytes |
SHA-256: b5efeea00bef92d6b84f62428242db0623ec32ecbf35ddaff1eabd31fe727bde |
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font_01_sfnt_off000079b5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x79B5 | 2320 bytes |
SHA-256: 7bb91423d63eb6bd7c2657278979848d60b7d38679106ec23dbd755ba6ab3d32 |
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font_02_sfnt_off00008405.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8405 | 14000 bytes |
SHA-256: d6437786defdfd63f68dbb10b396963d323eac4a29f008ec0521c4e942e0aa9d |
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font_03_sfnt_off0000b097.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB097 | 16224 bytes |
SHA-256: 5f3bf50395e8d1b65f29ab90a426c3665da69f8437ae50e88eef237d5e22552a |
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font_04_sfnt_off0000c61e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC61E | 4364 bytes |
SHA-256: d3c7657556295dc9c2a00f4d257fe1e9127064d6abd5a48be7f29aa542f64ab2 |
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