Malicious PDF — malware analysis report

Static analysis result for SHA-256 c50b4518da6bd292…

MALICIOUS

PDF

54.7 KB Created: 2020-08-30 02:50:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 23f2342f9411d4a5f6867042eb6f397e SHA-1: d75200d7da1371b1e2499cc3e580f0164a8b1aeb SHA-256: c50b4518da6bd292388adfc903166ae40d6740635bc3d5f90e41ca2532ed99a3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a link that redirects to a malicious URL, disguised as a movie download. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this behavior. The ML classifier also strongly indicates maliciousness. No scripts were extracted, but the embedded link is sufficient to classify the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The 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.
  • Embedded URL info EMBEDDED_URL
    One 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/wix?keyword=troll+hunter+full+movie+english+free
    • https://cdn.shopify.com/s/files/1/0433/9925/0081/files/pdf_carburateur_solex_32_34_z2.pdf
    • https://cdn.shopify.com/s/files/1/0430/1121/1425/files/40559094053.pdf
    • https://cdn.shopify.com/s/files/1/0432/8436/5476/files/59627181897.pdf
    • https://cdn.shopify.com/s/files/1/0431/5542/3398/files/auma_sar_actuator_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0429/1595/4847/files/56890532698.pdf
    • https://cdn.shopify.com/s/files/1/0434/0537/7701/files/67351934466.pdf
    • https://cdn.shopify.com/s/files/1/0429/4426/6399/files/dead_poets_society_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/9443/4202/files/50637672223.pdf
    • https://cdn.shopify.com/s/files/1/0435/7813/0593/files/65440019284.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/libidurekatomanazavevufi.pdf
    • https://static.usrfiles.com/ugd/ce0e6d_4efc6d90df134c13ab854ffe8b717834.pdf
    • https://static.usrfiles.com/ugd/b8c837_89c8ccee109b40e9ad89d3b19b6d3d23.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.

FilenameKindSourceSize
font_00_sfnt_off00009617.bin
4b0208a9cab0df51a57c7202f3fbf4b536ae0d8cf5bb1893c13cff42f9f471bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9617 4980 bytes
font_01_sfnt_off0000a6eb.bin
919949d8e23220bb7ae7a50c17916f6d37ec680f7b5a8e070bdda52421ad0382		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6EB 11996 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.