Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6ee381bab4f381e…

MALICIOUS

PDF

45.4 KB Created: 2020-08-13 23:46:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c280899f8e4fc9365a8c97e40d77b531 SHA-1: 842eaffa0ac4ff58b0e49916b0e85a1ab13abc9d SHA-256: a6ee381bab4f381eed3c303c1899685010922b31a1022a5084d74ad0846aef42
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=langrisser+guide+mobile'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on cdn.shopify.com. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the malicious URL, suggesting a lure for users interested in 'Langrisser mobile'.

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.ru/pify?keyword=langrisser+guide+mobile
    • http://files.leannejohnston.com/uploads/1/3/0/7/130738971/be70e888f8.pdf
    • http://files.accentcreateevents.com/uploads/1/3/1/1/131163740/3538742.pdf
    • http://files.krabidream.com/uploads/1/3/2/6/132681566/3285554.pdf
    • https://cdn.shopify.com/s/files/1/0430/0754/1401/files/61670295944.pdf
    • https://cdn.shopify.com/s/files/1/0432/8387/3942/files/litolizena.pdf
    • https://cdn.shopify.com/s/files/1/0429/3145/4119/files/rojabufo.pdf
    • https://cdn.shopify.com/s/files/1/0428/0041/4883/files/pepiwolodibexi.pdf
    • https://cdn.shopify.com/s/files/1/0427/9946/4611/files/69459138077.pdf
    • https://cdn.shopify.com/s/files/1/0428/7243/8951/files/texas_commercial_driver_license_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/4815/7859/files/mobile_strike_mods.pdf
    • https://cdn.shopify.com/s/files/1/0435/5883/0231/files/92259948067.pdf
    • https://cdn.shopify.com/s/files/1/0432/8374/2884/files/sutomovedotupesabizar.pdf
    • https://cdn.shopify.com/s/files/1/0431/3877/7249/files/servio_social_e_meio_ambiente_livro.pdf
    • https://cdn.shopify.com/s/files/1/0435/1308/6106/files/korijufa.pdf
    • https://cdn.shopify.com/s/files/1/0431/2216/3876/files/dexikoninufab.pdf
    • https://cdn.shopify.com/s/files/1/0436/4494/4542/files/upsc_assistant_commandant_2020_syllabus.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_off00007325.bin
f1104f4aea33819444df0a86f5c3e4fe828fe533a4ba05c118ea60e3df3eec27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7325 5228 bytes
font_01_sfnt_off000084d1.bin
e2eae8dbfd216d465c537107415f5ce36bddc2ca2791bf8ab6e3e03239489b31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84D1 10536 bytes

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