MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a large number of embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be a lure for 'gmat verbal review 2019 pdf'. The presence of numerous external links, many pointing to Shopify domains, suggests an attempt to create a link farm or distribute malicious content. The ML classifier strongly indicated maliciousness.
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=gmat+verbal+review+2019+pdf
- http://files.chickenheavenonearth.com/uploads/1/3/2/6/132695601/3f34d1d.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://cdn.shopify.com/s/files/1/0431/3468/1250/files/types_of_audio_visual_aids.pdf
- https://cdn.shopify.com/s/files/1/0433/8312/8214/files/logic_games_bible_free.pdf
- https://cdn.shopify.com/s/files/1/0427/8986/3580/files/alcatel_lucent_ip_touch_4028_manual_portugues.pdf
- https://cdn.shopify.com/s/files/1/0433/2109/8408/files/amravati_mandal_newspaper_download.pdf
- https://cdn.shopify.com/s/files/1/0440/7571/2664/files/muwoviburokixovakib.pdf
- https://cdn.shopify.com/s/files/1/0430/7435/5351/files/damodaran_valuation_spreadsheet.pdf
- https://cdn.shopify.com/s/files/1/0438/0642/5249/files/90963540572.pdf
- https://cdn.shopify.com/s/files/1/0433/8332/4822/files/flow_meter_installation_guide.pdf
- https://cdn.shopify.com/s/files/1/0431/4424/9499/files/15613046591.pdf
- https://cdn.shopify.com/s/files/1/0431/4556/0220/files/31302933273.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005a76.bince31800ee107011d838edef1904b993a6dd7252265578f64da63bcad676304b1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5A76 | 5388 bytes |
font_01_sfnt_off00006cdd.bin59ca1f85c7ccd5378cd5ba75b0d8115d0e774a025995c78b8e298c1ccdadaa88 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6CDD | 10472 bytes |
font_02_sfnt_off0000909b.binff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x909B | 4324 bytes |
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