Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bc8e77b05bbbf46…

MALICIOUS

PDF

74.1 KB Created: 2020-08-12 06:21:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ba6aafbb1665de152961ea51044d889 SHA-1: 30978c61a54198c236b1a66a7f42ea55124f2328 SHA-256: 1bc8e77b05bbbf4669b1f68399dc0a3c29c97701009de1ba80ccea2fdfa32b8d
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the primary goal is to redirect the user to malicious infrastructure, likely for further exploitation or credential harvesting.

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=cavitation+reaction+engineering+pdf
    • http://files.hvtelovestudio.com/uploads/1/3/1/8/131871572/jixama.pdf
    • http://files.wcacreatives.com/uploads/1/3/0/8/130814070/0d79b723c11.pdf
    • http://files.keshoamahoro.com/uploads/1/3/0/7/130775868/a1557357ab2aa3a.pdf
    • https://cdn.shopify.com/s/files/1/0436/1748/4957/files/17194660231.pdf
    • https://cdn.shopify.com/s/files/1/0430/3434/5625/files/59002047660.pdf
    • https://cdn.shopify.com/s/files/1/0430/0003/7527/files/wipovodenadugufanuvetenot.pdf
    • https://cdn.shopify.com/s/files/1/0428/1974/8006/files/10112485753.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/cuales_son_los_valores_universales.pdf
    • https://cdn.shopify.com/s/files/1/0430/5007/4269/files/54440767492.pdf
    • https://cdn.shopify.com/s/files/1/0435/1967/2472/files/diagnosis_bronkiektasis.pdf
    • https://cdn.shopify.com/s/files/1/0432/6028/0982/files/managerial_accounting_braun.pdf
    • https://cdn.shopify.com/s/files/1/0439/2756/8552/files/fizevefiledagonipu.pdf
    • https://cdn.shopify.com/s/files/1/0433/3695/8104/files/14829663699.pdf
    • https://cdn.shopify.com/s/files/1/0438/6488/3355/files/les_adjectif_numraux_cardinaux.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/13980588881.pdf
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/momaj.pdf
    • https://cdn.shopify.com/s/files/1/0431/7832/8221/files/jomogutomosole.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_off0000e509.bin
47b506468915aa1629509f75811253b231eaf366d3ee67991b47cec71485b7f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE509 5076 bytes
font_01_sfnt_off0000f66a.bin
19addb9cf49f7b65eae5e52d807681dd500756f2a1ed52a82c608b97fd21986f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF66A 10680 bytes

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