MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a large number of embedded links, many of which are SEO-optimized and point to PDF files hosted on Shopify. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is disguised with a keyword related to "sanitary engineering books pdf". This suggests a phishing or scam attempt to redirect users to malicious content. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector is a strong indicator of malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
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.com/pify?keyword=sanitary+engineering+books+pdf In PDF document text
- http://files.flyintofirstgrade.com/uploads/1/3/1/8/131856353/3ef5aa1d.pdfIn PDF document text
- http://files.littlevillacreations.com/uploads/1/3/1/4/131454238/xisatawojibatakilifu.pdfIn PDF document text
- http://files.hoapainting-services.com/uploads/1/3/0/8/130874370/gapozopesuvemesoji.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/1/0430/3765/5191/files/50191279433.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1995/9454/files/cambridge_igcse_economics_workbook_answers_susan_grant.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/7311/9143/files/zerarub.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6420/5216/files/55945814905.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/4627/9080/files/rosolirixov.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/5665/0650/files/excellence_in_business_communication.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7863/1072/files/55517892789.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3281/3469/files/16443330804.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6489/3344/files/nafesoleruf.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/9648/8613/files/62396043279.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/3722/1276/files/36156361708.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4764/8412/files/zajufavofomusila.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/2045/1997/files/18869575725.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_off000052ee.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x52EE | 5376 bytes |
SHA-256: bfe1daa543be99067bcecee60e4a809a82b2953a041940a3fbf0b558435f7ef4 |
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font_01_sfnt_off00006540.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6540 | 10084 bytes |
SHA-256: d5f47a5cbcc9fce6fec9afbe4e45540776a7832b768fa7032fffe4fca249a44c |
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font_02_sfnt_off000087dd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x87DD | 16560 bytes |
SHA-256: 5a4734b07e6b61c2d304cecce731c5ec8b3f83133482626c7d4a256b0baf3c3f |
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font_03_sfnt_off00009e98.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9E98 | 4324 bytes |
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2 |
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