MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.cc. The document body, though heavily obfuscated, contains the URL that leads to the malicious redirector, suggesting a lure to a malicious site. The ML classifier also 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=sample+answer+to+form+interrogatories+california
- http://fekuf.quantelab.org/uploads/1/3/0/7/130739561/5750438.pdf
- http://xarif.thirdstreetchurchofchrist.org/uploads/1/3/0/9/130969363/jefazejij-jukisifovukege-xejogixoparajaz.pdf
- https://cdn.shopify.com/s/files/1/0431/6974/2999/files/gozibofug.pdf
- https://cdn.shopify.com/s/files/1/0461/3858/9352/files/70266942283.pdf
- https://cdn.shopify.com/s/files/1/0431/2412/9952/files/25305564297.pdf
- https://cdn.shopify.com/s/files/1/0445/3584/0932/files/bpp_acca_f7_financial_reporting_book_2017.pdf
- https://cdn.shopify.com/s/files/1/0429/6487/7471/files/47946324833.pdf
- https://cdn.shopify.com/s/files/1/0433/1080/9256/files/91872859163.pdf
- https://cdn.shopify.com/s/files/1/0440/1030/7749/files/95111259136.pdf
- https://cdn.shopify.com/s/files/1/0428/6880/1695/files/livigutimepirapanip.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/71135401618.pdf
- https://cdn.shopify.com/s/files/1/0431/2937/2821/files/xinunabaju.pdf
- https://cdn.shopify.com/s/files/1/0434/7179/8436/files/febodefexaxigezamebozu.pdf
- https://cdn.shopify.com/s/files/1/0428/9550/7622/files/84967602202.pdf
- https://cdn.shopify.com/s/files/1/0440/4923/6118/files/kimomisivupeg.pdf
- https://cdn.shopify.com/s/files/1/0431/8298/1278/files/past_tense_irregular_verbs_worksheets_2nd_grade.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_off000085db.bin353e5116c3f9e2ce6aa67f799b080031ea9ea5b716a5ee3ec51b25d5df415a3c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x85DB | 5532 bytes |
font_01_sfnt_off000098a5.bin12086ec4b77313f074b1a19796fc68ebab197454ac13e740fd3652983eec788e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x98A5 | 10088 bytes |
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