MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a heuristic firing for a malicious redirector link and a link farm, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains text related to 'Iso 2859 latest version' and a URL that aligns with the malicious redirector finding. The presence of numerous links, many pointing to static.usrfiles.com, suggests a coordinated effort to distribute malicious content. No scripts were extracted from this sample.
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/wix?keyword=iso+2859+latest+version In PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_daf473557cde4217b9b9c2eee6f07215.pdfIn PDF document text
- https://static.usrfiles.com/ugd/f14cf6_4a38d5eea1cc48b594376a9163c21658.pdfIn PDF document text
- https://static.usrfiles.com/ugd/07625c_94e3890784034e42a47236efbd65e51e.pdfIn PDF document text
- https://static.usrfiles.com/ugd/45e30f_8c36d5ecbe9d4ff9a8faa9d3ca7bfc64.pdfIn PDF document text
- https://static.usrfiles.com/ugd/8d57bd_fc8c1e21b97c41ee878c381a5e5629d3.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_ae5f3e1cbf8447b7ab0616285f8b1dff.pdfIn PDF document text
- https://static.usrfiles.com/ugd/01e791_b6f66ff7e207471b91d1be75514309c2.pdfIn PDF document text
- https://static.usrfiles.com/ugd/6f58fb_c96047ab62954fc9a54c9115c8cb5ef6.pdfIn PDF document text
- https://static.usrfiles.com/ugd/cd79e3_1faa28042a2f46c89d40092e99ed4a8b.pdfIn PDF document text
- https://static.usrfiles.com/ugd/64d889_1b2a523031564841ae4d3c77a68498bc.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_fdd3d76c3f8547e69e103a70e265f844.pdfIn PDF document text
- https://static.usrfiles.com/ugd/de3d83_e2577106dbad4318abb0499522fd3781.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/7727/8623/files/aoe_ii_cheats.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/1187/3688/files/1342764196.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4434/7799/files/dipifitojusupege.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
- https://savannah.gnu.org/projects/freefont/In PDF document text
- http://www.gnu.org/licenses/In PDF document text
- http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005f44.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5F44 | 5280 bytes |
SHA-256: e10a05c91907d3cac4ed129cece9c59ae6a483e2a34289e49fb250a9da97624c |
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font_01_sfnt_off00007111.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7111 | 6168 bytes |
SHA-256: be917c0db7373273820b965e09a90eb2fe17fe2eb699b6f9fe1ec8b3b19cfce3 |
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font_02_sfnt_off00007ffe.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7FFE | 10240 bytes |
SHA-256: 513af632110ff89a81d7fee81f85e8467787e220b41d2bf29ac5d7233b539a4e |
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