Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ab03681c377de48…

MALICIOUS

PDF

48.1 KB Created: 2020-08-24 12:44:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 025515e5a3d4662c4daddaa434bc4fa3 SHA-1: 009120db18b08883c84920eed8400127dea76b3c SHA-256: 3ab03681c377de48cf286dfd84973bdd0e254bdad94db3ed69922e83729ad171
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary link redirecting to malicious infrastructure. The embedded URL `https://ttraff.cc/pify?keyword=google+sheet+translate+to+english` is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting the intent is to trick users into clicking the link under the guise of a useful tool.

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=google+sheet+translate+to+english
    • http://files.westernenglishsetterclub.org/uploads/1/3/1/4/131437693/2479888.pdf
    • http://fizinu.capitoloperarichmond.com/uploads/1/3/1/4/131437423/3492141.pdf
    • http://muveku.sickfitpe.com/uploads/1/3/0/7/130740514/womuzow.pdf
    • http://files.performanceinc.club/uploads/1/3/2/7/132712209/rulewurinis_mafibir_xisejilolurime_zifer.pdf
    • http://files.antoniodavidsinopoli.com/uploads/1/3/0/8/130873907/4090271.pdf
    • https://cdn.shopify.com/s/files/1/0433/9420/3806/files/povapiwoguweguza.pdf
    • https://cdn.shopify.com/s/files/1/0434/0236/3047/files/c_function_template_argument_deduction.pdf
    • https://cdn.shopify.com/s/files/1/0445/3695/5044/files/arifureta_light_novel_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/9721/8460/files/ropewulidaruvatis.pdf
    • https://cdn.shopify.com/s/files/1/0430/6157/5834/files/71506444021.pdf
    • https://cdn.shopify.com/s/files/1/0433/8778/1276/files/duleloxaba.pdf
    • https://cdn.shopify.com/s/files/1/0438/1802/5122/files/gizikijovi.pdf
    • https://cdn.shopify.com/s/files/1/0429/4171/0499/files/lujuvuzeme.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_off000072c4.bin
15210fac79471b680afd1acf0ad064f4a5da2a4e8df21ec546c85b9b62ce20e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72C4 4768 bytes
font_01_sfnt_off000082e6.bin
26a9b4b077311e6b06c5aef4a990892beadc7764462d0d74d3bdf68be3ee687b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82E6 10140 bytes
font_02_sfnt_off0000a589.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA589 4324 bytes

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