MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded URLs, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a redirector link to traff.cc, which is known malicious infrastructure. The ML classifier also strongly indicated maliciousness. The document body contains text related to 'numerical reasoning test answers', likely a lure to entice users to click the embedded links.
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=ey+numerical+reasoning+test+answers
- http://files.k9compass.com/uploads/1/3/1/4/131453724/9962875.pdf
- http://files.ramsgateswissys.com/uploads/1/3/1/4/131453818/degirax.pdf
- http://files.goodshepherdinoshkosh.com/uploads/1/3/2/8/132815791/jamarakam_laremekim.pdf
- http://files.summasportswear.com/uploads/1/3/1/4/131453807/118d8e22a22790b.pdf
- http://files.victorybaptist-wf.org/uploads/1/3/1/4/131454521/pakatojetuvupedul.pdf
- https://cdn.shopify.com/s/files/1/0440/3052/5590/files/biodegradation_book.pdf
- https://cdn.shopify.com/s/files/1/0432/0709/8529/files/peratizesiju.pdf
- https://cdn.shopify.com/s/files/1/0428/8118/8003/files/dofotapad.pdf
- https://cdn.shopify.com/s/files/1/0430/9126/3649/files/california_9th_grade_math_textbook.pdf
- https://cdn.shopify.com/s/files/1/0434/4774/6710/files/demography_and_economic_development.pdf
- https://cdn.shopify.com/s/files/1/0438/2910/0701/files/nusojalotitebi.pdf
- https://cdn.shopify.com/s/files/1/0431/5165/5061/files/all_about_periodic_table.pdf
- https://cdn.shopify.com/s/files/1/0435/7432/9507/files/pat_a_cake_lyrics.pdf
- https://cdn.shopify.com/s/files/1/0429/7631/3503/files/kanigi.pdf
- https://cdn.shopify.com/s/files/1/0432/5369/4626/files/18367093793.pdf
- https://cdn.shopify.com/s/files/1/0434/4214/3397/files/58743975100.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_off00006381.bin868cd0b6ef848244e6e38e0193f6923ff3c6841df01fbfd76ae5ba6f48d8775e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6381 | 5268 bytes |
font_01_sfnt_off00007565.bin97e90fd29b6ef86804f8ffcff4dafd9d085b6d97250abd96afe55c15a0a6eb07 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7565 | 10012 bytes |
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