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. The document body, though heavily obfuscated, contains the same URL and appears to be a lure for "Mcse notes server 2016 pdf" with a call-to-action button. The PDF also hosts a large number of links to other PDFs on Shopify domains, likely for SEO manipulation to improve search engine ranking for malicious content. The primary malicious URL is https://ttraff.cc/wb?keyword=mcse%20notes%20server%202016%20pdf.
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/wb?keyword=mcse%20notes%20server%202016%20pdf In PDF document text
- http://bunoko.cloudy-shirts.com/uploads/1/3/2/7/132740405/pepuji_donamoguzix_bemugexig.pdfIn PDF document text
- http://files.artscollective.co.nz/uploads/1/3/1/4/131437385/fe2aa96a.pdfIn PDF document text
- http://files.thejoyrideco.com/uploads/1/3/2/6/132696171/651af81e2daf.pdfIn PDF document text
- http://files.onceuponaneden.org/uploads/1/3/2/7/132712661/fc764e23bc1b85.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/1/0430/9454/0452/files/68103167736.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/2102/3904/files/antibiotics_definition.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/6566/1853/files/nonlinear_dimensionality_reduction.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5219/6249/files/zigan.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6200/1825/files/jilimupawanebojagatujumuz.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/0536/1821/files/windows_medea_player_9.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1382/4927/files/47494622888.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3658/9730/files/21726600417.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6052/7253/files/37110423867.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/3377/8597/files/jazufiropisoxazelibu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8144/1181/files/loophole_in_lsat_logical_reasoning.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3300/2145/files/54256870498.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/0356/6486/files/62687385494.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9590150980.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
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000080f9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x80F9 | 5452 bytes |
SHA-256: 25f1f2c3eac91a51706360362cb36932097131294bce38979fb0bcf1bd68c3bc |
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font_01_sfnt_off000093b3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x93B3 | 10524 bytes |
SHA-256: c79478f3575d8ec05bf72c6e353381fb4bf6d09756e84208d020dfd899fa92a1 |
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