MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF document contains embedded links that lead to a redirector service, which in turn points to a malicious URL. The document body, though heavily obfuscated, contains text suggesting it is a lure for 'chemistry regents august 2017 answers jmap'. The presence of numerous external links, many hosted on Shopify, indicates a link farm strategy to improve SEO for malicious content. The ML classifier 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.cc/pify?keyword=chemistry+regents+august+2017+answers+jmap
- http://vutuba.royalmarineser.com/uploads/1/3/1/8/131871787/zamazarasa.pdf
- https://cdn.shopify.com/s/files/1/0433/8437/3406/files/risibogazeruxosoduxe.pdf
- https://cdn.shopify.com/s/files/1/0432/4501/1112/files/85520878913.pdf
- https://cdn.shopify.com/s/files/1/0429/6219/0489/files/deloitte_internal_audit_report.pdf
- https://cdn.shopify.com/s/files/1/0440/1538/6789/files/table_border_not_showing_in.pdf
- https://cdn.shopify.com/s/files/1/0439/7488/5534/files/wixovupobesazevavadudinof.pdf
- https://cdn.shopify.com/s/files/1/0440/9245/7112/files/automatic_refresher_firefox.pdf
- https://cdn.shopify.com/s/files/1/0434/3503/2737/files/apfelwein_selber_machen.pdf
- https://cdn.shopify.com/s/files/1/0430/3945/7431/files/73529679184.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/50751207741.pdf
- https://cdn.shopify.com/s/files/1/0438/0963/6512/files/43553422697.pdf
- https://cdn.shopify.com/s/files/1/0427/4647/8759/files/73924173027.pdf
- https://cdn.shopify.com/s/files/1/0438/8575/6568/files/family_budget_sample.pdf
- https://cdn.shopify.com/s/files/1/0434/6049/3465/files/idsa_mrsa_guidelines_2016.pdf
- https://cdn.shopify.com/s/files/1/0447/0787/2921/files/panasonic_phone_manual_kx-_tgea20.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_off00007123.bind3b6b645ea50ef3dec5531b881b74ba8767509939c2dc9e3bd42cd7b078040a4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7123 | 5780 bytes |
font_01_sfnt_off000084cf.bin711291158b0e2649b3b3c93f99fac2fd3eb2a2e4b7ca53ebf4231a4915316e6d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x84CF | 15008 bytes |
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