MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wb?keyword=kawasaki%20vulcan%20500%20bobber%20kit'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0435/1583/8618/files/11919190626.pdf'. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, appears to contain the redirector URL, suggesting a lure to a malicious site.
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=kawasaki%20vulcan%20500%20bobber%20kit In PDF document text
- http://files.ds-tuinwerken.com/uploads/1/3/1/4/131411281/27d7b23baf1e0.pdfIn PDF document text
- http://figuperi.victoryhrc.org/uploads/1/3/0/7/130739309/9150040fbe57.pdfIn PDF document text
- http://www.opentle.orgIn 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/1/0435/1583/8618/files/11919190626.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0441/0834/9592/files/gepimazumoxa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4337/2699/files/18162847801.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/8209/5517/files/vogema.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/8581/6218/files/heartbeat_buddy_holly_sheet_music.pdfIn PDF document text
- https://static.usrfiles.com/ugd/5d2cf3_d9a25fbc014c4153be2ed785aa1626b8.pdfIn PDF document text
- https://static.usrfiles.com/ugd/35ddae_43283065800a448a9b4829d4720e2080.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_889d4b88bee9423abddabc7b51e033ab.pdfIn PDF document text
- https://static.usrfiles.com/ugd/bca722_8d331cf02bd74dab8972e3f32b2d8a85.pdfIn PDF document text
- https://static.usrfiles.com/ugd/4b7290_7ab76e43a1f74686a0f1b230c9160f3b.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b5973a_9ccdd8e95ba34dcb9551ca2fcff1d4af.pdfIn PDF document text
- https://static.usrfiles.com/ugd/73c254_3e19dd6711be4fe79ab01640ec7e4f47.pdfIn PDF document text
- https://static.usrfiles.com/ugd/74e905_e37233f5110c4d64b53640d6f43731cc.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://www.gnu.org/licenses/gpl.htmlIn 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 |
|---|---|---|---|
stream_004_off000075ce.bin |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x75CE | 10268 bytes |
SHA-256: 13455c5dd0a4914d6d75b49cd5c132e720df436d2de3f4f4bf586cdf70ce2f7c |
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font_00_sfnt_off0000635b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x635B | 5384 bytes |
SHA-256: c1ef7d67130f31e8898b461964a7816494dcf632b588816889aa7b3e26c07ede |
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font_02_sfnt_off00009279.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9279 | 10624 bytes |
SHA-256: ac8464b081005a3e8052ac47a4a6e5a72d132b6e8f066fe30a88c3371ef5e973 |
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