Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaeba4c21babfa6b…

MALICIOUS

PDF

38.5 KB Created: 2020-09-06 11:54:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8eb55763efd657fc3c93c7bd9c7227fb SHA-1: 6740a932456967ab6310752fe991d26710c5b742 SHA-256: aaeba4c21babfa6b7ce9a9b3ffd8152c308365e63d8af20abc33d262d78ae0bd
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'https://ttraff.me/wix?keyword=return+to+work+after+sickness+letter+template'. Additionally, another critical heuristic indicates a PDF link farm, suggesting an attempt to manipulate search engine results or distribute multiple malicious links. The document body, though partially corrupted, contains text related to a 'return to work' template, likely a lure.

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.me/wix?keyword=return+to+work+after+sickness+letter+template
    • https://cdn.shopify.com/s/files/1/0429/2630/9535/files/10101359444.pdf
    • https://cdn.shopify.com/s/files/1/0431/3671/2861/files/trumpet_and_saxophone_duets_free_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0431/8697/8984/files/78941378999.pdf
    • https://cdn.shopify.com/s/files/1/0430/4555/2290/files/67974108292.pdf
    • https://cdn.shopify.com/s/files/1/0428/9291/8937/files/42576635151.pdf
    • https://cdn.shopify.com/s/files/1/0431/9395/8560/files/raxaxi.pdf
    • https://cdn.shopify.com/s/files/1/0430/4538/8442/files/98740887300.pdf
    • https://cdn.shopify.com/s/files/1/0430/6881/7562/files/pokigesigu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4008/0025/files/micro_vaped_v2_instructions.pdf
    • https://cdn.shopify.com/s/files/1/0432/5959/2859/files/bum_bum_tam_tam_flute_ringtone.pdf
    • https://cdn.shopify.com/s/files/1/0430/2631/7473/files/saluvanotis.pdf
    • https://cdn.shopify.com/s/files/1/0428/8551/3379/files/46373590309.pdf
    • https://cdn.shopify.com/s/files/1/0434/8323/4470/files/altera_cyclone_v_soc_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0429/6730/2295/files/23533406960.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_off00005a2b.bin
944fe9d65c7eb8528812ace9931ea45ef8defd967ef4002f893bf94d4850416e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A2B 5324 bytes
font_01_sfnt_off00006c50.bin
8d4cbb88ecb306c2d139b42f8f7b9a9cf1878026e9fdb95640134adbdaabf7e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C50 9564 bytes

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