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 point to external resources. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.cc/wb?keyword=programming%20languages%20robert%20w%20sebesta%20pdf'. The document body, though heavily obfuscated, appears to be a lure related to programming books, likely to trick users into clicking the malicious links. No scripts were extracted from this sample.
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.cc/wb?keyword=programming%20languages%20robert%20w%20sebesta%20pdf In PDF document text
- http://files.candbcreative.com/uploads/1/3/0/8/130873781/fopexuv.pdfIn PDF document text
- http://files.clearhorizon.ca/uploads/1/3/0/7/130775199/4803881.pdfIn PDF document text
- http://files.staugustinereed.org/uploads/1/3/0/7/130775666/b63868.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/1/0430/2284/4067/files/kuwapoxamuxizafadexi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/9785/8972/files/gisuzug.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4272/5275/files/nasilol.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2556/2785/files/32660158336.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8245/6981/files/dofaje.pdfIn PDF document text
- https://zejamiwi.files.wordpress.com/2020/06/wukajepazapuzer.pdfIn PDF document text
- https://biwapatevav.files.wordpress.com/2020/06/37432837638.pdfIn PDF document text
- https://gunilugozu602496905.files.wordpress.com/2020/06/1600536290.pdfIn PDF document text
- https://mixowunajux.files.wordpress.com/2020/06/15013015714.pdfIn PDF document text
- https://sesuxegu.files.wordpress.com/2020/06/45158457608.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31321710084.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3147/7922/files/javoxanivijab.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98572357872.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/7502/7619/files/39750105051.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/6880/1702/files/90208072115.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/7404/4579/files/fasexixosofimenep.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/9960/9505/files/vadepadovirase.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_off00007748.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7748 | 5476 bytes |
SHA-256: 0327e68f5ff29c7b5f00a26a1833068ddb100475cec6a48b5fd35fc1c99636a8 |
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font_01_sfnt_off000089d1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x89D1 | 10336 bytes |
SHA-256: ffaaa560021f76901d8027f02877b0fc693e5ef716f5d65e4a8101ec9a691fe2 |
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