MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/wb?keyword=unified%20soil%20classification%20system%20flow%20chart%20pdf'. This indicates an attempt to lure users to a malicious site under the guise of providing a technical document. The document body, though heavily obfuscated, also contains this URL and a list of other Shopify-hosted PDF links, suggesting a link farm or SEO poisoning tactic to increase visibility of the malicious redirector. No scripts were extracted, limiting the analysis of further payload delivery.
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.ru/wb?keyword=unified%20soil%20classification%20system%20flow%20chart%20pdf In PDF document text
- http://files.hillcountryyoungmarines.com/uploads/1/3/1/3/131384113/5485733.pdfIn PDF document text
- http://files.apetsreflection.com/uploads/1/3/1/1/131164081/220901.pdfIn PDF document text
- http://files.buckshillmodelrailwayin7mm.com/uploads/1/3/1/4/131437889/3348955.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/1/0435/1007/1460/files/traumnovelle_english.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/2047/4779/files/general_chemistry_solutions_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5664/4774/files/harmony_remote_setup.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6078/1465/files/23940848259.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/5725/9420/files/tatap.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6567/0806/files/9951116141.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/3773/4550/files/pdf_catalogues_south_africa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/8076/2023/files/mawusonusad.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/0086/2619/files/65574636886.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3377/9611/files/maxozetesuzedololuvu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/2873/2314/files/biodata_form_file.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1005/6615/files/7806814346.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bojakotipizijogi.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000060a7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x60A7 | 5368 bytes |
SHA-256: 761b2328d74f27cbd25f84660ae542f0e73d0baf7829260fbff81d4db6b58a06 |
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font_01_sfnt_off000072ca.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x72CA | 14856 bytes |
SHA-256: ad2f9f29fc4814ac4dbcf34652c2cfb1d87ebbcea8b1a49a53ee01bc88121d5b |
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font_02_sfnt_off0000a0ea.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA0EA | 4324 bytes |
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c |
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