MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though corrupted, contains text suggesting it is a worksheet, likely a lure to disguise the malicious intent. The ML classifier strongly indicated maliciousness, and the presence of a malicious redirector URL is a high-confidence indicator of an attack.
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=greatest+common+monomial+factor+worksheet+pdf
- http://files.beautifulskincarebymayra.com/uploads/1/3/0/8/130874613/3117283.pdf
- http://files.ricksmobilerv.com/uploads/1/3/2/3/132303238/02fd0933.pdf
- http://files.mrpultz.com/uploads/1/3/1/1/131163832/9669725.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0433/5806/0703/files/83799283836.pdf
- https://cdn.shopify.com/s/files/1/0428/0621/4819/files/random_lines_of_code.pdf
- https://cdn.shopify.com/s/files/1/0427/6636/8935/files/27052541278.pdf
- https://cdn.shopify.com/s/files/1/0428/5143/4659/files/sujexumiburupoxolafovonin.pdf
- https://cdn.shopify.com/s/files/1/0430/5407/1957/files/54465566586.pdf
- https://cdn.shopify.com/s/files/1/0437/6520/3093/files/hd_avi_movies_hollywood_in_hindi_2015.pdf
- https://cdn.shopify.com/s/files/1/0430/7084/9181/files/25495138248.pdf
- https://cdn.shopify.com/s/files/1/0436/0749/0717/files/dynamics_hibbeler.pdf
- https://cdn.shopify.com/s/files/1/0437/7152/7325/files/74936522436.pdf
- https://cdn.shopify.com/s/files/1/0436/2226/9090/files/70491873626.pdf
- https://cdn.shopify.com/s/files/1/0431/5404/7137/files/xipow.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_off0000459c.binc1351f1a386d5426b9bb37574a149ee73dce86dfd9bf05b24ca0cafd010a12a2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x459C | 5584 bytes |
font_01_sfnt_off00005883.binf82a1c2133168bfcee7695af032558195421e59f5c83e7459df62d45433e8e8d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5883 | 9400 bytes |
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