MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a large number of embedded links, many of which point to a redirector service designed to obscure the final destination. The primary malicious URL identified is https://ttraff.com/pify?keyword=mathematics+for+engineers+by+chandrika+prasad+pdf, which likely leads to a phishing or malware distribution site. The document body itself is heavily obfuscated and contains metadata suggesting it was generated by wkhtmltopdf, a tool often abused for creating malicious PDFs.
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.com/pify?keyword=mathematics+for+engineers+by+chandrika+prasad+pdf
- http://files.ohenrymustangband.com/uploads/1/3/2/3/132303329/50189d239004a.pdf
- http://files.athensorchestras.com/uploads/1/3/1/3/131380558/8910475.pdf
- http://files.limitlessptny.com/uploads/1/3/1/4/131438538/difek.pdf
- http://files.quinlanquality.co.nz/uploads/1/3/2/6/132681398/5311663.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0450/3427/4966/files/sekex.pdf
- https://cdn.shopify.com/s/files/1/0435/4244/6231/files/54406983859.pdf
- https://cdn.shopify.com/s/files/1/0429/8627/4967/files/86944140957.pdf
- https://cdn.shopify.com/s/files/1/0428/8941/2764/files/hng_dn_hc_streamline_english_departures.pdf
- https://cdn.shopify.com/s/files/1/0437/9050/0001/files/basic_html5_template.pdf
- https://cdn.shopify.com/s/files/1/0429/3846/6460/files/ruet_admission_circular_2020_20.pdf
- https://cdn.shopify.com/s/files/1/0429/1143/2857/files/96311055703.pdf
- https://cdn.shopify.com/s/files/1/0432/8577/4491/files/67433085417.pdf
- https://cdn.shopify.com/s/files/1/0434/0659/0106/files/xuxipaj.pdf
- https://cdn.shopify.com/s/files/1/0431/4890/2554/files/sweet_potato_pie_story.pdf
- https://cdn.shopify.com/s/files/1/0440/2964/0854/files/maximus_auto_group.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_off00005ff1.bineafba08fb57648fc1635673f51c6a3b7fc6bd46a43a35d9d4933d8664a9969fe |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5FF1 | 5848 bytes |
font_01_sfnt_off000073b8.bin00ab459f07f8052fa34f95de82df74edf15c10652584df4f6bc3ff4b6b43053b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x73B8 | 10840 bytes |
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