MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains multiple embedded URLs, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'one word substitution dictionary free download pdf' and the malicious URL itself, suggesting a lure. The ML classifier strongly indicated maliciousness. The presence of numerous Shopify-hosted PDF links, while some are benign, indicates a potential link farm strategy to improve SEO for malicious content.
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=one%20word%20substitution%20dictionary%20free%20download%20pdf In PDF document text
- http://bakep.charlotteacupuncturetherapy.com/uploads/1/3/1/1/131164250/eeb02263f.pdfIn PDF document text
- http://kereno.danielleharth.com/uploads/1/3/1/3/131384281/xavekuxitojiwi.pdfIn PDF document text
- http://files.diamanocoura.org/uploads/1/3/1/1/131163601/wekonadituwexuxu.pdfIn PDF document text
- http://files.5starcustomlures.com/uploads/1/3/0/7/130775241/vivokugivesotan.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
- http://fedorahosted.org/lohitIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/3057/6278/files/tsc_promotion_appraisal_form.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/3444/1885/files/uninstall_node._js_mac.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0450/6599/4392/files/57772660490.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8307/1650/files/lojejofolav.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7433/8454/files/faxekaxovilo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1157/0838/files/piper_cherokee_140.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5395/6758/files/zomejetanogifoxopekebag.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0447/9103/8118/files/sonda_vesical_demora.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9472/8103/files/61492744141.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0448/0850/3456/files/junut.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005130.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5130 | 5392 bytes |
SHA-256: 4c7eb16558244930dfcdd71bf4ccb5e25a4abbe59370c7262cdaece5266db163 |
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font_01_sfnt_off000063a4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x63A4 | 9876 bytes |
SHA-256: 1e089e5efc9d32c5656871c9ac5cdf91ccaa66bd10f4886ee85b4f8c67a51eae |
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font_02_sfnt_off00008579.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8579 | 4324 bytes |
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3 |
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font_03_sfnt_off00009379.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9379 | 5252 bytes |
SHA-256: 9c374d9cc61730b72d24ab7d67e95757c5b8164a0877aac61677cb7fe6d0b962 |
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