MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector and another for a PDF link farm. The document body, though heavily obfuscated, contains text related to 'Brainstorming cards pdf' and the authoring application, suggesting a lure. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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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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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=brainstorming+cards+pdf
- http://files.campbellsbayvermont.com/uploads/1/3/1/3/131383204/luwasonoseranonoju.pdf
- http://files.audiostak.com/uploads/1/3/1/0/131070572/30655356c9.pdf
- http://files.bethchrismanmusic.com/uploads/1/3/1/0/131070846/1c1999ad37.pdf
- http://files.lapasd.com/uploads/1/3/2/6/132681916/3090628.pdf
- http://files.markst-photography.com/uploads/1/3/1/4/131438759/d43e9ffd17f21.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0431/2160/6817/files/vowibovifotonaw.pdf
- https://cdn.shopify.com/s/files/1/0427/6230/5702/files/14472860131.pdf
- https://cdn.shopify.com/s/files/1/0429/9682/6261/files/word.pdf
- https://cdn.shopify.com/s/files/1/0430/6888/3098/files/acog_guidelines_preeclampsia_2020.pdf
- https://cdn.shopify.com/s/files/1/0433/4711/6197/files/79450092309.pdf
- https://cdn.shopify.com/s/files/1/0432/9806/2501/files/carrom_rules_in_sinhala.pdf
- https://cdn.shopify.com/s/files/1/0431/6259/9584/files/duwusa.pdf
- https://cdn.shopify.com/s/files/1/0430/9578/5629/files/jawami.pdf
- https://cdn.shopify.com/s/files/1/0434/1560/1304/files/27511751745.pdf
- https://cdn.shopify.com/s/files/1/0427/8580/0358/files/gta_5_mods_xbox_one.pdf
- https://cdn.shopify.com/s/files/1/0430/2451/5229/files/99934244720.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00007cf3.bin7cbca17ed22ec418326a5277b8262098d40b2fcd16f5c854a013e45668c4643f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7CF3 | 5492 bytes |
font_01_sfnt_off00008f90.binaf62825e77cb6e8577ff93cf60480a18aa67c4957cdb2e92bbc92325358db230 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8F90 | 10356 bytes |
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