MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains text suggesting it is an 'American english file 3 workbook answer key', which serves as a lure. The ML classifier strongly flagged this PDF as malicious, and the presence of a malicious redirector indicates an attempt to lead the user to a harmful site.
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.com/pify?keyword=american+english+file+3+workbook+answer+key
- http://doxisapo.abamericanhistory.com/uploads/1/3/1/3/131378960/rekavemu_wilox.pdf
- http://files.jimcottrill.com/uploads/1/3/1/6/131637291/3790801.pdf
- http://files.marchemcmillan.ca/uploads/1/3/2/8/132814969/4829934.pdf
- https://cdn.shopify.com/s/files/1/0429/6612/2662/files/16423054851.pdf
- https://cdn.shopify.com/s/files/1/0437/0795/7400/files/eating_disorder_guidelines_queensland.pdf
- https://cdn.shopify.com/s/files/1/0433/6638/3768/files/gaxofekogopifavakufi.pdf
- https://cdn.shopify.com/s/files/1/0433/6150/1336/files/peer_gynt_henrik_ibsen.pdf
- https://cdn.shopify.com/s/files/1/0433/0805/6740/files/gonusutiwasunob.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31443612403.pdf
- https://cdn.shopify.com/s/files/1/0434/4931/9577/files/beginner_english_words.pdf
- https://cdn.shopify.com/s/files/1/0437/9541/5189/files/pid_controller_algorithm_source_code.pdf
- https://cdn.shopify.com/s/files/1/0437/7500/0730/files/all_branches_of_engineering.pdf
- https://cdn.shopify.com/s/files/1/0430/0659/1127/files/certificate_border.pdf
- https://cdn.shopify.com/s/files/1/0434/5564/3813/files/49770890728.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_off00004779.binccf2808514e4e5429c69f0d5210031dbdd9c73f6479aa4e2f4bc18c1444fd7f8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4779 | 5848 bytes |
font_01_sfnt_off00005b46.bin68a7cc8f1caf8a27f3f26739208fc18135ae8bb3fd153e366b5ba5fb05ddef50 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5B46 | 10480 bytes |
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