MALICIOUS
242
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.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 7
-
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.
-
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.
-
Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
-
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
-
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
-
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.
-
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 In PDF document text
- http://luxuxi.fremontsailingclub.org/uploads/1/3/2/7/132710780/kagixaradof.pdfIn PDF document text
- http://nuzodape.jjohnsonartist.com/uploads/1/3/1/6/131606295/cd7dd.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6273/0645/files/fiwovegarorufaz.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0456/4464/4519/files/modul_aritmatika_sosial.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/6483/6764/files/dishonored_2_guide_ign.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2599/7722/files/12173610211.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1478/2104/files/60012872135.pdfIn PDF document text
- https://static.usrfiles.com/ugd/67e251_6d2d18ee0c8f4148b3959a9710ab032f.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_725656b0a7a34cee9ba910416be135d2.pdfIn PDF document text
- https://static.usrfiles.com/ugd/4117a9_4df12778557c44cfba8c156b5f56f698.pdfIn PDF document text
- https://static.usrfiles.com/ugd/6924eb_eed08eae6f464a608b0e7fcc99bf3865.pdfIn PDF document text
- https://static.usrfiles.com/ugd/3fd21f_12644f2c72e64a0ca8c197741ae6ec79.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/7806/5055/files/english_speaking_practice_for_beginners.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/7666/2949/files/39334975566.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9565/4567/files/tegarerutewar.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006839.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6839 | 5696 bytes |
SHA-256: ac4e59181d181c4baa3f2014bd5e426106947929c70498f194558b3cb687830b |
|||
font_01_sfnt_off00007bb1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7BB1 | 10180 bytes |
SHA-256: 315d146eca062accd4956cf1c1571de4d965538e7a3b1f0cf7bb65942407f1dc |
|||
Open this report in the interactive analyzer, or submit your own file for analysis.