MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The ML classifier also strongly indicated maliciousness. The embedded URL points to a redirector service, which is a common technique for distributing malware or conducting phishing attacks. The document body, though heavily obfuscated, contains the same suspicious URL.
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=sat+1+biology+book+pdf
- http://files.churchofstcolman.org/uploads/1/3/0/7/130776168/e66ac2.pdf
- http://files.rgengineers.com/uploads/1/3/1/3/131380598/9093235.pdf
- http://files.scottcountyfasttrack.com/uploads/1/3/2/6/132681378/7730934.pdf
- https://cdn.shopify.com/s/files/1/0430/5358/0439/files/bruchrechnen_aufgaben_5._klasse.pdf
- https://cdn.shopify.com/s/files/1/0435/6187/7663/files/ethnic_groups_in_africa.pdf
- https://cdn.shopify.com/s/files/1/0433/7546/0515/files/vefoxisumupujobopo.pdf
- https://cdn.shopify.com/s/files/1/0433/4796/8149/files/jejowolajixavoduxa.pdf
- https://cdn.shopify.com/s/files/1/0432/9222/9797/files/kevodosol.pdf
- https://cdn.shopify.com/s/files/1/0433/3702/3656/files/patofisiologi_jantung_koroner.pdf
- https://cdn.shopify.com/s/files/1/0431/8828/9694/files/jonodefazuparemabanuxuvod.pdf
- https://cdn.shopify.com/s/files/1/0429/6874/4087/files/49843924598.pdf
- https://cdn.shopify.com/s/files/1/0435/0682/7429/files/shielded_metal_arc_welding_book.pdf
- https://cdn.shopify.com/s/files/1/0437/8276/6743/files/anatomy_book_for_bams.pdf
- https://cdn.shopify.com/s/files/1/0428/9904/6553/files/catena_de_la_legion_de_maria.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_off0000ae25.bin78bdd805a934af8affd53e030eed34276b2a5fc56c799893c0aa2cb833c7bdf0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAE25 | 5396 bytes |
font_01_sfnt_off0000c0a4.bin838c6d0416824c4ee6c07369696f3bc4d9c43cb9aca0a9c5c2613935c28dae49 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC0A4 | 11072 bytes |
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