Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce7a09d56ae336e4…

MALICIOUS

PDF

34.6 KB Created: 2020-08-24 09:16:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 002f3f71f7f1994be86090117010a9ae SHA-1: ca3a4520fb463d55ff5652a244162c9209d277ee SHA-256: ce7a09d56ae336e4dac3d4a26a363b397577f10d6e671741283eb66b75aa14de
150 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links, 'https://ttraff.cc/pify?keyword=adyaksha+kannada+movie+songs', is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to movie songs and the wkhtmltopdf tool, suggesting a lure to disguise the malicious link farm. No scripts were extracted from this sample.

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/pify?keyword=adyaksha+kannada+movie+songs
    • http://kosik.leticiahuerta.com/uploads/1/3/1/8/131871699/zapuxodoxutes.pdf
    • http://files.edwardsseptic.net/uploads/1/3/2/6/132695663/wapifokotobi_gowug_nefatovawisux_xamusanib.pdf
    • http://files.thrivesouth.com/uploads/1/3/1/8/131856539/rafafo.pdf
    • http://bodubogun.shopmiddleground.com/uploads/1/3/0/8/130814729/dugivokoba_nisozude_webamudixipet.pdf
    • https://cdn.shopify.com/s/files/1/0431/9418/7933/files/xawobu.pdf
    • https://cdn.shopify.com/s/files/1/0435/4991/7347/files/fundamentals_of_corporate_finance_brealey.pdf
    • https://cdn.shopify.com/s/files/1/0428/9432/7961/files/sosoketiwotoxul.pdf
    • https://cdn.shopify.com/s/files/1/0430/0665/6666/files/8318937135.pdf
    • https://cdn.shopify.com/s/files/1/0458/6271/5545/files/74527091030.pdf
    • https://cdn.shopify.com/s/files/1/0434/4964/7270/files/saperudezuwakiloxibe.pdf
    • https://cdn.shopify.com/s/files/1/0433/6523/6895/files/certificate_of_appreciation_template.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/deninasewidaxu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4441/3341/files/awk_tutorial_point.pdf
    • https://cdn.shopify.com/s/files/1/0428/1548/8167/files/75292572333.pdf
    • https://cdn.shopify.com/s/files/1/0429/0691/0876/files/nukudeveno.pdf
    • https://cdn.shopify.com/s/files/1/0434/1514/2567/files/manerifapipon.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_off000048fe.bin
f05a70b033add83e48d04e67504aac06753d758f0ab501a365cafe73421ec181
pdf-font-stream PDF embedded font (sfnt) at offset 0x48FE 5324 bytes
font_01_sfnt_off00005b05.bin
4171f6c2544126e907063511380a81ea82b346c7b12292cb15a8f8c142eb4c7b
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B05 10068 bytes