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 a redirector service (ttraff.ru) that is flagged as malicious. The document body, though partially corrupted, contains text related to educational worksheets and the wkhtmltopdf tool, suggesting a lure to disguise the malicious links. The primary attack pattern involves tricking users into clicking these links, which likely lead to further malicious content or exploits.
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/pify?keyword=adding+unlike+mixed+numbers+worksheets In PDF document text
- http://files.appleseedshomenursery.com/uploads/1/3/1/4/131437956/fapewajivipufu.pdfIn PDF document text
- http://lamesig.ccsdsummeredventures.com/uploads/1/3/1/4/131407995/608501.pdfIn PDF document text
- http://files.fossilfindersenterprises.com/uploads/1/3/1/6/131637218/5109959.pdfIn PDF document text
- http://files.eliterealtyintl.com/uploads/1/3/1/0/131070230/7277548.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/1/0435/7154/4225/files/72799788440.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/3506/5505/files/beckett_basketball_card_price_guide_2020.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/6294/2101/files/christian_theology.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3884/2779/files/42280788145.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5284/3676/files/the_look_of_disapproval.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/1261/0472/files/xusugos.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7361/7568/files/heat_treatment_of_copper_alloys.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/8626/3960/files/18681508694.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0878/5562/files/types_of_sound_absorbing_materials.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/0027/3830/files/kibuwos.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/5837/1480/files/playboy_magazines_free_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7399/3890/files/xewabofopivakalevumo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4295/4661/files/duvave.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_off0000540d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x540D | 5380 bytes |
SHA-256: 4b5b7112c6ba9a12865828b625ed2bb1426cba2ca2c4fdb1df01973f19a27ea4 |
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font_01_sfnt_off00006639.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6639 | 9608 bytes |
SHA-256: b4a2189657f13d36961a3ef256cdc313781c319cf41583b011a5bef055124055 |
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font_02_sfnt_off00008750.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8750 | 18412 bytes |
SHA-256: ea34c0613c564936f7df53d1b6ff28e524594c1044862f8870f109d9e7abe38b |
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