Malicious PDF — malware analysis report

Static analysis result for SHA-256 b340e95b6660ee47…

MALICIOUS

PDF

98.9 KB Created: 2020-09-08 14:47:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0bc34e39e42f7732a3f591d6ff900d9 SHA-1: f85e175eb8bff81588faccfc4e009dc1cd886175 SHA-256: b340e95b6660ee472ecf6942acd512f5946ef19f41bae62a709f53967eb1da02
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one prominent link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirect. This suggests a phishing or social engineering attack aiming to direct users to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=the+peculiar+institution+apush+worksheet
    • https://cdn.shopify.com/s/files/1/0430/6567/1833/files/omegle_tv_apk_6._3._6.pdf
    • https://cdn.shopify.com/s/files/1/0430/5318/7223/files/cathedral_ward_bloodborne.pdf
    • https://cdn.shopify.com/s/files/1/0434/2241/7046/files/ukulele_tabs_free.pdf
    • https://cdn.shopify.com/s/files/1/0427/4782/2236/files/statistical_analysis_using_excel.pdf
    • https://cdn.shopify.com/s/files/1/0431/0709/0581/files/steamboat_springs_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/alain_de_botton_the_course_of_love.pdf
    • https://cdn.shopify.com/s/files/1/0459/9830/9543/files/annamalai_movie_songs_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0461/9832/5399/files/rakixi.pdf
    • https://cdn.shopify.com/s/files/1/0433/3902/2485/files/ceroplastes_floridensis.pdf
    • https://static.usrfiles.com/ugd/2e16aa_e874ffbe343a4b75a41c839502ffc6b0.pdf
    • https://static.usrfiles.com/ugd/3f80ec_5f1b97dee7854ad0bb959e1fef2ea916.pdf
    • https://static.usrfiles.com/ugd/b8c837_43c840659fd2480593c52aa8e440cea8.pdf
    • https://static.usrfiles.com/ugd/6fd45c_9d259a39d2564ebdb508c8308b34743f.pdf
    • https://static.usrfiles.com/ugd/735424_47af80ef47a24796a63c59aa8a84d36f.pdf
    • https://static.usrfiles.com/ugd/eb4c03_1a2b0b71a5fd4b5fa1a6172230fe2f46.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_off00014268.bin
5442dd5b3484de201e2f6cae17ad00bb4086f60ef79d1e207917d33665a55e03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14268 5124 bytes
font_01_sfnt_off000153e3.bin
e89f52bdf7c36c549d365d005dcd9ad039f9d89cc4b6da212efc0e2a9d292ede		 pdf-font-stream PDF embedded font (sfnt) at offset 0x153E3 13180 bytes

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