MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Laboratory report 6 epithelial tissues answer key' and the malicious URL, suggesting a lure to trick users into clicking the malicious link. The ML classifier strongly flagged this PDF as malicious, and the presence of a redirector link indicates a likely attempt to deliver a second-stage payload.
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=laboratory+report+6+epithelial+tissues+answer+key
- http://files.griseldapuspa.com/uploads/1/3/1/8/131856121/masejowugudeno.pdf
- http://files.qldspruikle.com/uploads/1/3/1/8/131856232/2382f9f46954.pdf
- http://files.discoveryelectricbikes.com/uploads/1/3/2/7/132740375/4424646.pdf
- https://cdn.shopify.com/s/files/1/0433/4718/1718/files/79755681424.pdf
- https://cdn.shopify.com/s/files/1/0436/4363/3822/files/78305253204.pdf
- https://cdn.shopify.com/s/files/1/0451/1848/8741/files/prefix_and_suffix_worksheets_for_grade_5.pdf
- https://cdn.shopify.com/s/files/1/0434/0236/3047/files/baaghi_movie_full_3gp.pdf
- https://cdn.shopify.com/s/files/1/0428/4655/2227/files/43982226385.pdf
- https://cdn.shopify.com/s/files/1/0431/9903/7595/files/44562792977.pdf
- https://cdn.shopify.com/s/files/1/0429/1064/6435/files/vodawozexula.pdf
- https://cdn.shopify.com/s/files/1/0430/3729/4745/files/30990863851.pdf
- https://cdn.shopify.com/s/files/1/0431/2802/9345/files/digital_logic_interview_questions_and_answers.pdf
- https://cdn.shopify.com/s/files/1/0434/7628/7648/files/23163783620.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005648.bin16311a7bfb157ccb8a599ecde779a29a17ee9bb4d731533f0ca7cf8cfe37986f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5648 | 5284 bytes |
font_01_sfnt_off00006849.bin2b047f19684b1cb9463d917b4d2730759b9fbd3c68599811318a1ac08ba24955 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6849 | 10192 bytes |
font_02_sfnt_off00008b29.binff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8B29 | 4324 bytes |
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