MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=gentamicin+mechanism+of+action+pdf'. This URL is likely used to lure victims to a malicious site. The document body, though heavily obfuscated, also contains this URL, reinforcing its malicious intent. The presence of numerous other links to PDFs hosted on CDNs suggests a link farm or SEO poisoning tactic to distribute the malicious PDF.
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=gentamicin+mechanism+of+action+pdf In PDF document text
- http://files.gretchenstelter.com/uploads/1/3/0/8/130874368/mejalup.pdfIn PDF document text
- http://files.ivansivak.net/uploads/1/3/1/3/131398479/44b3d812cb.pdfIn PDF document text
- http://files.onesimplyiris.com/uploads/1/3/0/7/130776775/babon.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/1/0438/8644/4699/files/riparoziwiribe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7038/2485/files/les_fournitures_scolaires_en_anglais.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7315/8821/files/wuzuronezomujij.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0441/1287/1576/files/weder.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9980/8149/files/xagifeb.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38138836364.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/3031/4133/files/mawutodudilajeseluliti.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8933/0330/files/mobil_1_oil_filter_cross_reference.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7571/4715/files/dipoxujiribaw.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1386/4602/files/futenubugiwe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/7207/0556/files/1341631147.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8148/1884/files/estrategias_de_la_cadena_de_suministros.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/5427/7532/files/12670905560.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0417/4233/files/39094452609.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_off0000a090.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA090 | 5300 bytes |
SHA-256: dbd7136beb3906dc99b20c964b46087700b6d7b9e0a262f6c83259d49ff18009 |
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font_01_sfnt_off0000b27d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB27D | 12352 bytes |
SHA-256: 2f1d94243a0a854a54bc50c833e23717d3700c833b35a86ea1ed911194c03e5a |
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font_02_sfnt_off0000dbf4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDBF4 | 16160 bytes |
SHA-256: 298a059a47d04402a822539650cb20f422186273fa20e8de9e2ef64d066f24e9 |
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