MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=enzyme+structure+and+function+worksheet'. It also exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL and a benign-looking PDF filename, suggesting a lure for users to click the link. The ML classifier strongly flagged this PDF as malicious.
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=enzyme+structure+and+function+worksheet
- http://files.sfxfaithformation.org/uploads/1/3/2/8/132814286/7365526.pdf
- http://vewoxuxo.larryphillipsnyc.com/uploads/1/3/0/8/130874246/408239421.pdf
- https://cdn.shopify.com/s/files/1/0433/5471/8358/files/jejewego.pdf
- https://cdn.shopify.com/s/files/1/0438/4561/5766/files/school_calendar_2020_rwanda.pdf
- https://cdn.shopify.com/s/files/1/0428/0591/9903/files/tomudubelatevadowapep.pdf
- https://cdn.shopify.com/s/files/1/0432/5667/6510/files/20076768361.pdf
- https://cdn.shopify.com/s/files/1/0433/5288/3352/files/23281457691.pdf
- https://cdn.shopify.com/s/files/1/0432/3698/2944/files/vagutajiwunadiguxusele.pdf
- https://cdn.shopify.com/s/files/1/0428/9665/4489/files/bartholin_abscess_treatment.pdf
- https://cdn.shopify.com/s/files/1/0435/1308/6106/files/botany_honours_syllabus_2020.pdf
- https://cdn.shopify.com/s/files/1/0436/1935/2739/files/2d_animation_in_blender.pdf
- https://cdn.shopify.com/s/files/1/0436/4979/4213/files/catholic_social_teaching_textbook_saint_mary_press.pdf
- https://cdn.shopify.com/s/files/1/0437/6743/1320/files/amino_acids_proteins_and_peptides.pdf
- https://cdn.shopify.com/s/files/1/0459/6996/5216/files/cakephp_form_helper_template.pdf
- https://cdn.shopify.com/s/files/1/0428/8030/3270/files/suwofabepujowokujirine.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_off00004f09.binddf6ad4db8ac92d0abb380d54685007b836ebdb40b9dbe5ae0fbb9d443a3a3f1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4F09 | 5496 bytes |
font_01_sfnt_off000061ab.binc1b5c69998aeb47cfd0d490e361b784f96f157c9d1998bbf3e179b227a9368bb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x61AB | 9900 bytes |
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