Malicious PDF — malware analysis report

Static analysis result for SHA-256 304ab79ebdb86ec9…

MALICIOUS

PDF

49.8 KB Created: 2020-08-15 16:40:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5523e5222abc4ca9a99479d0593b7ef0 SHA-1: 47fcb405761299cf2616e2cfa7a48f3e9fbdf415 SHA-256: 304ab79ebdb86ec9fc9bd9f7ab2db50b800ad797db1bc0bc08d6d7a9a63e008a
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is ttraff.ru, which is likely used to funnel victims to further malicious content. The document body itself is heavily obfuscated but contains URLs that are part of a link farm, suggesting an attempt to manipulate search engine results or distribute malicious content through seemingly benign links.

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/wb?keyword=les%20chants%20de%20maldoror%20pdf%20english
    • http://tezaximo.megaworldglobal.com/uploads/1/3/1/6/131607163/9f51f34cf8e7e.pdf
    • http://files.salsamama.org/uploads/1/3/1/4/131453944/e5cf74933698.pdf
    • http://lemavizo.carnoustieclaymores.com/uploads/1/3/1/4/131408353/835487.pdf
    • https://cdn.shopify.com/s/files/1/0429/8797/8905/files/top_down_network_design.pdf
    • https://cdn.shopify.com/s/files/1/0435/0866/2440/files/literacy_narrative_outline.pdf
    • https://cdn.shopify.com/s/files/1/0428/8105/6935/files/fiminisijimani.pdf
    • https://cdn.shopify.com/s/files/1/0437/9141/7505/files/51869452033.pdf
    • https://cdn.shopify.com/s/files/1/0430/7664/9124/files/acs_organic_chemistry_practice_exam.pdf
    • https://cdn.shopify.com/s/files/1/0433/4980/3159/files/51387246219.pdf
    • https://cdn.shopify.com/s/files/1/0435/8638/8123/files/besoins_fondamentaux_cap_petite_enfance.pdf
    • https://cdn.shopify.com/s/files/1/0434/0531/2156/files/77670317159.pdf
    • https://cdn.shopify.com/s/files/1/0431/7052/9436/files/93134431711.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_off000077c5.bin
29360e6a69841fe1ac21bd873f4a8dd3916462edd15a4c7963f55324812a4f7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77C5 5296 bytes
font_01_sfnt_off00008990.bin
d048f863d7660bf43dc500808b4f1cec01b9ba2e78fb599b36cf9b36d0f56e07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8990 10176 bytes
font_02_sfnt_off0000ac6d.bin
8405bb6ca9a6fb718a2e910e1cdde4d74ac2122cab0061dc5f772322db9c7ccd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC6D 4324 bytes

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