MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. This URL is presented within the document body, disguised as a link to 'Question tag practice worksheets with answers'. The ML classifier also strongly flagged this PDF as malicious. The primary attack vector appears to be social engineering through a deceptive link.
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/wb?keyword=question%20tag%20practice%20worksheets%20with%20answers
- http://files.lawrencemcneil.com/uploads/1/3/2/3/132302894/2708437.pdf
- http://files.kimfirmston.com/uploads/1/3/1/4/131452950/dulafud.pdf
- http://files.chinherr.com/uploads/1/3/1/3/131380471/d9dda3f.pdf
- http://files.chinherr.com/uploads/
- https://cdn.shopify.com/s/files/1/0427/8249/0791/files/wuxepikijatilajitumovoxu.pdf
- https://cdn.shopify.com/s/files/1/0432/7034/0772/files/dusojemobuligekes.pdf
- https://cdn.shopify.com/s/files/1/0434/3591/7464/files/73380169867.pdf
- https://cdn.shopify.com/s/files/1/0429/1434/9219/files/zejunarofawi.pdf
- https://rurilaxun.files.wordpress.com/2020/06/dokefawadif.pdf
- https://fafigunik.files.wordpress.com/2020/07/29611673050.pdf
- https://popuxovalu909409782.files.wordpress.com/2020/07/juxelakovuverugubibi.pdf
- https://kedisufod.files.wordpress.com/2020/06/47476616895.pdf
- https://cdn.shopify.com/s/files/1/0434/0776/9750/files/wugonadoweleto.pdf
- https://cdn.shopify.com/s/files/1/0429/9603/9839/files/91777493918.pdf
- https://cdn.shopify.com/s/files/1/0433/9925/0072/files/70822978504.pdf
- https://cdn.shopify.com/s/files/1/0434/4869/6993/files/lituv.pdf
- https://cdn.shopify.com/s/files/1/0431/6980/8550/files/witubibupuxad.pdf
- https://cdn.shopify.com/s/files/1/0429/7857/4490/files/sejebida.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_off000055d3.bin2ee3f8c7cfe336f67d849c52b82ca284d96ae85ff2710d3a47e5ab3ae84c2b58 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x55D3 | 5264 bytes |
font_01_sfnt_off000067c7.bind6e69911b322308f992a006517304f8f55ed63e070a0fc6400aeb4a5b1f7e821 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x67C7 | 9364 bytes |
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