Malicious PDF — malware analysis report

Static analysis result for SHA-256 365025dc794a7eb8…

MALICIOUS

PDF

46.4 KB Created: 2020-09-02 21:24:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ef8df41b1239e124eb307c44b5bef9db SHA-1: 28510b32e190b95f3bcc20ef7125fcfa37067a8a SHA-256: 365025dc794a7eb848d62e560818b612eafad30bc25898b8956b9a9616444498
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.cc, which is designed to lure users into clicking through to potentially harmful content. The document body, though heavily obfuscated, contains the URL and keywords suggesting a phishing attempt related to 'biometric screening form quest diagnostics'. The presence of a large number of external PDF links further indicates a link farm designed to obscure the ultimate destination.

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=biometric+screening+form+quest+diagnostics
    • https://static.usrfiles.com/ugd/0cd019_f96148e544f34f30948c724731801e48.pdf
    • https://static.usrfiles.com/ugd/c7a620_17cb064c2dac4943b799913835320e18.pdf
    • https://static.usrfiles.com/ugd/b8c837_a17e330b4a9c422fb9b634a2ac92d295.pdf
    • https://static.usrfiles.com/ugd/05900a_1d9497bc47244c689c16c487aa865f1d.pdf
    • https://static.usrfiles.com/ugd/b8c837_6eaa2cb787b24813958636a975cbcb37.pdf
    • https://static.usrfiles.com/ugd/575363_55a6fa151342407c84d208bbbc17a9fb.pdf
    • https://cdn.shopify.com/s/files/1/0432/9907/8304/files/2007_volkswagen_passat_2._0_t_wagon.pdf
    • https://cdn.shopify.com/s/files/1/0451/1842/3194/files/61881637282.pdf
    • https://cdn.shopify.com/s/files/1/0429/0324/0871/files/android_or_iphone_2018.pdf
    • https://cdn.shopify.com/s/files/1/0449/3810/0891/files/yakima_bike_rack_fit_guide.pdf
    • https://cdn.shopify.com/s/files/1/0450/1137/0148/files/sembulingam_physiology.pdf
    • https://static.usrfiles.com/ugd/0d089b_61f1254e2e354d2cbb0bb27d654c6e16.pdf
    • https://static.usrfiles.com/ugd/5e8de6_f7af8f87d9ca430e885fb10deb1d4311.pdf
    • https://static.usrfiles.com/ugd/b8c837_0c48052946144b0ab0da24408f636f6e.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000602c.bin
0a81a944f4d00d225e7e985480c2f8c1a3e5559563cc61f08df436b7e805fa0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x602C 5368 bytes
font_01_sfnt_off0000724b.bin
27273e60542809a6b56d84b19197e3b28a6e3f6c1c28245819aa59b645008385		 pdf-font-stream PDF embedded font (sfnt) at offset 0x724B 14248 bytes
font_02_sfnt_off00009e71.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E71 4324 bytes

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