MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure at https://ttraff.ru/pify?keyword=acca+f5+bpp+exam+kit+pdf. The document body, though heavily obfuscated, also contains this URL and other links to Shopify-hosted PDFs, suggesting a link farm designed to lure users to malicious content. The ML classifier also strongly flagged this PDF as malicious.
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=acca+f5+bpp+exam+kit+pdf
- http://files.lauraschultzyoga.com/uploads/1/3/2/8/132814473/323615.pdf
- http://fiver.glowfishstudios.com/uploads/1/3/1/4/131453133/a4f3fb.pdf
- http://kotos.lindsaymc.com/uploads/1/3/2/7/132740435/ziparaf_rufapoxumezaxu.pdf
- http://pokebiba.hikingforthescaredycat.com/uploads/1/3/0/7/130775162/cd6026.pdf
- https://cdn.shopify.com/s/files/1/0432/7433/8454/files/samazidezowumurakez.pdf
- https://cdn.shopify.com/s/files/1/0437/3810/3962/files/adobe_acrobat_x_pro_edit.pdf
- https://cdn.shopify.com/s/files/1/0440/5841/1158/files/principle_of_cavity_preparation.pdf
- https://cdn.shopify.com/s/files/1/0440/7630/2486/files/rent_stabilized_lease_nyc.pdf
- https://cdn.shopify.com/s/files/1/0430/6649/1042/files/90987909936.pdf
- https://cdn.shopify.com/s/files/1/0439/5175/1336/files/12866409122.pdf
- https://cdn.shopify.com/s/files/1/0435/5771/6119/files/balagiwipisoluxe.pdf
- https://cdn.shopify.com/s/files/1/0434/6911/1461/files/iso_certification_process_steps.pdf
- https://cdn.shopify.com/s/files/1/0432/1234/1416/files/31139547376.pdf
- https://cdn.shopify.com/s/files/1/0432/8423/4398/files/36485652751.pdf
- https://cdn.shopify.com/s/files/1/0433/0684/4315/files/sample_email_for_sending_resume.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/
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005972.bin4d4abbe8c8198a176e88a3851197192fabde596fdfd7b89cecd74ea973dbacdf |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5972 | 5380 bytes |
font_01_sfnt_off00006bbf.binc0b38ae18606f13c47c018b9b401d8dd34a7671b36f29610809cdcbcbb96eb0e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6BBF | 10424 bytes |
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