Malicious PDF — malware analysis report

Static analysis result for SHA-256 dce67734a5bbf7f2…

MALICIOUS

PDF

50.1 KB Created: 2020-08-19 04:08:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68ed55ad01bf4ade891102b44e60b4b1 SHA-1: 7c81af16dfe843d4dbdde66a0b2ae1c322927022 SHA-256: dce67734a5bbf7f2766a0fc5ce3c9e5e23d9eac0ca79acb693027232d8f5b8ab
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector. The document body, though partially corrupted, contains text related to 'Spreadsheet on macbook pro' and the malicious URL, suggesting a lure to trick users into clicking the link. The primary malicious URL is https://ttraff.ru/pify?keyword=spreadsheet+on+macbook+pro, which is likely used to redirect users to a further malicious destination. No scripts were extracted from this sample.

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=spreadsheet+on+macbook+pro
    • http://lugodiw.simplyearlyjazz.com/uploads/1/3/0/7/130776213/5108094.pdf
    • http://files.iammercedesnicole.com/uploads/1/3/1/4/131437362/94d2b181.pdf
    • http://files.mmccolorado.online/uploads/1/3/1/4/131438563/b86252e91c3bd.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/81677143499.pdf
    • https://cdn.shopify.com/s/files/1/0436/2544/7587/files/livro_adestramento_de_caes.pdf
    • https://cdn.shopify.com/s/files/1/0430/0580/4698/files/59760156550.pdf
    • https://cdn.shopify.com/s/files/1/0435/6174/6595/files/60278569773.pdf
    • https://cdn.shopify.com/s/files/1/0431/4926/3004/files/jafabenalowanuwekumiv.pdf
    • https://cdn.shopify.com/s/files/1/0437/4256/0407/files/6010748280.pdf
    • https://cdn.shopify.com/s/files/1/0432/9612/9192/files/jagurobiwipisobotivib.pdf
    • https://cdn.shopify.com/s/files/1/0429/0081/6028/files/fallout_3_tips.pdf
    • https://cdn.shopify.com/s/files/1/0427/8861/8396/files/80453318416.pdf
    • https://cdn.shopify.com/s/files/1/0439/2042/5115/files/dvdvideosoft_premium_key_2016.pdf
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/94165665422.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/totavari.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_off0000863f.bin
2968a796c07986ffa32776dbf699c060407150485ab53e36a9fce9a65eb9483b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x863F 5588 bytes
font_01_sfnt_off00009908.bin
2becceca44fbda188a27c9a026a4bfa74f6922a4b0cf192a7c23377ce4c811ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9908 10192 bytes

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