MALICIOUS
168
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a lure related to an 'answer key' and includes a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains the URL that triggered the redirector heuristic. The presence of a password archive lure suggests an attempt to bypass gateway security by encrypting a payload, which is then likely delivered via the redirector. The PDF also contains a large number of external links, many hosted on Shopify, which is indicative of a link farm used for SEO poisoning or distributing malicious content.
Heuristics 5
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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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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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/wix?keyword=bhuonline+pet+answer+key+2019
- http://luxuxi.fremontsailingclub.org/uploads/1/3/2/7/132710780/kagixaradof.pdf
- http://nuzodape.jjohnsonartist.com/uploads/1/3/1/6/131606295/cd7dd.pdf
- https://cdn.shopify.com/s/files/1/0431/6273/0645/files/fiwovegarorufaz.pdf
- https://cdn.shopify.com/s/files/1/0456/4464/4519/files/modul_aritmatika_sosial.pdf
- https://cdn.shopify.com/s/files/1/0428/6483/6764/files/dishonored_2_guide_ign.pdf
- https://cdn.shopify.com/s/files/1/0431/2599/7722/files/12173610211.pdf
- https://cdn.shopify.com/s/files/1/0434/1478/2104/files/60012872135.pdf
- https://static.usrfiles.com/ugd/67e251_6d2d18ee0c8f4148b3959a9710ab032f.pdf
- https://static.usrfiles.com/ugd/b8c837_725656b0a7a34cee9ba910416be135d2.pdf
- https://static.usrfiles.com/ugd/4117a9_4df12778557c44cfba8c156b5f56f698.pdf
- https://static.usrfiles.com/ugd/6924eb_eed08eae6f464a608b0e7fcc99bf3865.pdf
- https://static.usrfiles.com/ugd/3fd21f_12644f2c72e64a0ca8c197741ae6ec79.pdf
- https://cdn.shopify.com/s/files/1/0435/7806/5055/files/english_speaking_practice_for_beginners.pdf
- https://cdn.shopify.com/s/files/1/0440/7666/2949/files/39334975566.pdf
- https://cdn.shopify.com/s/files/1/0430/9565/4567/files/tegarerutewar.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_off00006839.binac4e59181d181c4baa3f2014bd5e426106947929c70498f194558b3cb687830b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6839 | 5696 bytes |
font_01_sfnt_off00007bb1.bin315d146eca062accd4956cf1c1571de4d965538e7a3b1f0cf7bb65942407f1dc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7BB1 | 10180 bytes |
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