Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc78d31e68f035ae…

MALICIOUS

PDF

50.2 KB Created: 2020-08-22 10:32:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 930b3b62fe903272beeda6c9cc85e59e SHA-1: c96da90a1117ddafaf91f00eaf4247364c76c782 SHA-256: cc78d31e68f035aeec810fb1ee93fee63d740d3b734d021b1e951816e263644a
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link and a PDF link farm. The embedded URL points to 'ttraff.ru', which is flagged as a malicious redirector. Additionally, numerous links to PDFs hosted on Shopify are present, suggesting a link farm designed to attract traffic. The document body contains obfuscated text and URLs, reinforcing the malicious intent.

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=brevete+reform+pistol
    • http://files.restorativeintegration.com/uploads/1/3/1/4/131453399/e4490.pdf
    • http://files.lakeoftheoaks.net/uploads/1/3/1/4/131455475/f6849b18.pdf
    • http://files.federicoroncarolo.com/uploads/1/3/0/7/130776152/jokamoluvo-wuludumodor-sutefivijirivel.pdf
    • http://files.restorativeintegration.com/upload
    • https://cdn.shopify.com/s/files/1/0436/8406/9526/files/fokowofu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4466/7553/files/arabesque_1_piano.pdf
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/jimobijoxefajel.pdf
    • https://cdn.shopify.com/s/files/1/0429/2290/1663/files/64121483120.pdf
    • https://cdn.shopify.com/s/files/1/0437/1575/6181/files/muxezaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/5535/7852/files/jomibetilotolotimowi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8733/1481/files/atrahasis_testo_completo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6062/5562/files/16206826358.pdf
    • https://cdn.shopify.com/s/files/1/0433/2853/6731/files/vokize.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_off00008671.bin
fcfc20da40503b788094d4a118358439482ac77762493e7fb67eec33224ead47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8671 4944 bytes
font_01_sfnt_off0000973d.bin
9aad04cf9b6e9e321ad93ebabb8fb14fc05ef1d45aa73616edbee24180af3d07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x973D 10728 bytes

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