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 of which point to a redirector service identified as malicious. The document body text, though garbled, contains keywords related to PDF merging and software, suggesting a lure to trick users into clicking the malicious links. The ML classifier strongly indicates maliciousness, and the presence of a known malicious redirector URL supports this assessment.
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.ru/wb?keyword=merging%20pdf%20files%20foxit%20reader
- http://files.bluebonnetgang.com/uploads/1/3/1/4/131437074/e113de00.pdf
- http://zuped.baileytechnicalservices.com/uploads/1/3/0/8/130874207/tabobovobaguzileja.pdf
- http://susew.antoinettecarrier.com/uploads/1/3/0/9/130969985/5f17a05.pdf
- http://mowuw.bagelanddeli.com/uploads/1/3/0/9/130969423/6332151.pdf
- https://cdn.shopify.com/s/files/1/0434/7330/5762/files/12633239517.pdf
- https://cdn.shopify.com/s/files/1/0428/8220/3801/files/pufiduzeloguwurej.pdf
- https://cdn.shopify.com/s/files/1/0427/4916/5734/files/96015452003.pdf
- https://cdn.shopify.com/s/files/1/0433/2804/5209/files/54905355236.pdf
- https://cdn.shopify.com/s/files/1/0429/0579/6774/files/33902208914.pdf
- https://cdn.shopify.com/s/files/1/0433/4161/1159/files/psychology_and_alchemy_carl_jung_free.pdf
- https://cdn.shopify.com/s/files/1/0430/4361/8965/files/animator_s_survival_kit_expanded_edition_download.pdf
- https://cdn.shopify.com/s/files/1/0435/2838/8772/files/slope_field_generator_wolfram.pdf
- https://cdn.shopify.com/s/files/1/0433/3545/0774/files/24769217089.pdf
- https://cdn.shopify.com/s/files/1/0433/5104/8357/files/mosukoleg.pdf
- https://cdn.shopify.com/s/files/1/0432/2174/5822/files/kexuwepa.pdf
- https://cdn.shopify.com/s/files/1/0434/4519/0821/files/feluvizuroxixa.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_off00005ee7.binc4161b52d375f141eaa5d6ef33afde61d548921c75609d2264c62b357dbda091 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5EE7 | 5280 bytes |
font_01_sfnt_off000070fe.bin741a29b2b9ac9caf5b980a9046629fc430f61ad2c81d732df94b63a84e3ec217 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x70FE | 10656 bytes |
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