Malicious PDF — malware analysis report

Static analysis result for SHA-256 48745b0249fb84bd…

MALICIOUS

PDF

46.3 KB Created: 2020-08-30 15:11:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2f25633df8c913c0fafa9681655cd0cd SHA-1: 212f45acdf8654a8eeb0ae19c971d81fb9367c9a SHA-256: 48745b0249fb84bd0462beec9f77a7ea6d2aff9679539cb9af079b78ffc6fe22
152 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains the URL 'https://ttraff.club/wix?keyword=rothschild+ailesinin+serveti', which is flagged as a malicious redirector. This suggests the document is designed to lead users to malicious content, likely a phishing or scam page, by leveraging the topic of wealth.

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.club/wix?keyword=rothschild+ailesinin+serveti
    • https://static.usrfiles.com/ugd/b8c837_e43df2f9b04c402e848935d96cd244f6.pdf
    • https://static.usrfiles.com/ugd/3e87bf_475f3ad1008c424a9299cf58b6920d15.pdf
    • https://static.usrfiles.com/ugd/b8c837_b54901a16fa140ae866ad1d87633440b.pdf
    • https://cdn.shopify.com/s/files/1/0438/5410/2688/files/temorawazebidemu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1555/2674/files/77966502977.pdf
    • https://cdn.shopify.com/s/files/1/0437/6641/5514/files/ratifogakax.pdf
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/32380088096.pdf
    • https://cdn.shopify.com/s/files/1/0436/1325/7885/files/54330060354.pdf
    • https://cdn.shopify.com/s/files/1/0464/4755/8824/files/fatelalemak.pdf
    • https://cdn.shopify.com/s/files/1/0438/3670/2870/files/mitidamusedafubanefozex.pdf
    • https://cdn.shopify.com/s/files/1/0432/4117/7252/files/of_studies_by_francis_bacon_summary.pdf
    • https://cdn.shopify.com/s/files/1/0432/7692/7141/files/vakukofil.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13139855908.pdf
    • https://cdn.shopify.com/s/files/1/0431/4991/8374/files/54930527601.pdf
    • https://cdn.shopify.com/s/files/1/0457/5831/6700/files/hazard_and_risk_analysis_template.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_off0000732c.bin
6716b87420a5b6f560d515adaa21165c8f30bee05287602d3267dc9167b53570
pdf-font-stream PDF embedded font (sfnt) at offset 0x732C 5096 bytes
font_01_sfnt_off00008477.bin
010b5f5ed408c30996e6bb592f619a61d28bd71d7a03bb3903762ed4651429db
pdf-font-stream PDF embedded font (sfnt) at offset 0x8477 12284 bytes