MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
T1059.001 PowerShell
The PDF contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to a known malicious redirector, 'ttraff.cc', which is likely the primary malicious payload delivery mechanism. The document body, though partially corrupted, contains the text 'how to draw bending moment diagram pdf' and a URL that reconstructs to 'https://ttraff.cc/pify?keyword=how+to+draw+bending+moment+diagram+pdf', indicating a lure to disguise the malicious link. 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/pify?keyword=how+to+draw+bending+moment+diagram+pdf In PDF document text
- http://files.abbotswoodaction.org/uploads/1/3/2/7/132740350/lotoso_tewex_tabapirabuwit.pdfIn PDF document text
- http://files.cosmicbirding.com/uploads/1/3/1/4/131438282/voperojude.pdfIn PDF document text
- http://files.mountviewcommunitykindergarten.com/uploads/1/3/1/4/131409693/32f241302c5.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/1/0437/3485/9941/files/tafegujofafukera.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/7130/5896/files/28498401837.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1381/5966/files/90814189352.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8471/7979/files/70082687360.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8351/3494/files/bavelomuzizititewesowuzu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/2131/0880/files/entrepreneurial_development_book_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9263/1962/files/cubic_equations_of_state.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4678/8502/files/dezijojivuwenod.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/8036/6745/files/how_to_move_pages_in_adobe_acrobat_pro.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6321/3209/files/dikemitozuvotebabo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/9687/3885/files/88723455596.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/0094/5048/files/zurape.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5567/6568/files/67087520312.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000085ab.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x85AB | 5344 bytes |
SHA-256: 76726b39abe222dee10a6ac9995b78498e917503feaca1249afdc92cdf907132 |
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font_01_sfnt_off000097d3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x97D3 | 15352 bytes |
SHA-256: ad3a0a250fe560ed8e3b9034bcc457199a428747c0e0665ad3cfc09c627e2ce0 |
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font_02_sfnt_off0000c81a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC81A | 16096 bytes |
SHA-256: 8359d1bd5fdcb7784e153890727898ae1df356a68bf28bba4321897ff39eac40 |
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