MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF contains a mass external link farm, with a primary malicious redirector URL pointing to 'https://ttraff.com/pify?keyword=meyerhof+bearing+capacity+equation+pdf'. This suggests the document is designed to lead users to potentially harmful content under the guise of a technical document. The ML classifier strongly supports the malicious nature of this PDF.
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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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=meyerhof+bearing+capacity+equation+pdf In PDF document text
- http://files.daedalusinnovation.com/uploads/1/3/1/0/131070476/fivipa.pdfIn PDF document text
- http://files.koreanamericanhealthconference.com/uploads/1/3/0/7/130738693/mefizavizez-rozerabexuvoriv-zifuzeva-soniv.pdfIn PDF document text
- http://files.dianalara-somatics.com/uploads/1/3/1/4/131438150/sinuboxusulogigutese.pdfIn PDF document text
- http://files.christinacasillo.com/uploads/1/3/0/7/130775308/1001088.pdfIn PDF document text
- http://files.jameskeetonart.com/uploads/1/3/0/7/130775977/1271575.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/1/0428/8223/6583/files/78806258204.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0445/5625/5396/files/the_sneetches.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1079/3382/files/7532560157.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/8590/3525/files/eq2_slash_commands.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7880/2846/files/78559880573.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7003/7917/files/7895791712.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7081/6407/files/82253717324.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7954/8580/files/totosaz.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31995481059.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_off00009fa6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9FA6 | 5580 bytes |
SHA-256: 344b84520b6c5122b497a4866bc887507c7cc1d60cc4e6ac26e16ac961dbbdeb |
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font_01_sfnt_off0000b2a1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB2A1 | 16004 bytes |
SHA-256: 19ac2d1b8e999563de98f656d9a0cd925519a7b5080f7d50305ed4b3ce180311 |
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