Malicious PDF — malware analysis report

Static analysis result for SHA-256 abaa9a60fa935ac2…

MALICIOUS

PDF

34.5 KB Created: 2020-08-07 03:16:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 56b0c196d5cbbc244c7bf74040568f57 SHA-1: 4919cffd678c3d8de02d2c9d2727d264d7e89b89 SHA-256: abaa9a60fa935ac227c584b1956e59ebdeb7b1572f1bfca245c2ccb9bc2eb6ea
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=nuestro+segundo+cerebro+libro+pdf'. This indicates an attempt to lure the user to a malicious site. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, likely for SEO manipulation or to host further malicious content. The document body contains garbled text but includes the suspicious URL.

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=nuestro+segundo+cerebro+libro+pdf
    • http://files.exposingtheelca.com/uploads/1/3/2/8/132814343/d18d9.pdf
    • http://nokijud.elizabethconcrete.com/uploads/1/3/1/6/131606875/5053644.pdf
    • http://files.historiapopuli.com/uploads/1/3/2/3/132302910/roresi_sanijawi.pdf
    • http://files.ohhowsheblooms.com/uploads/1/3/0/7/130738559/5111857.pdf
    • https://cdn.shopify.com/s/files/1/0438/7209/2315/files/98376240539.pdf
    • https://cdn.shopify.com/s/files/1/0432/6558/9414/files/zazodikizepopo.pdf
    • https://cdn.shopify.com/s/files/1/0440/6660/3158/files/dagojepibukav.pdf
    • https://cdn.shopify.com/s/files/1/0432/5654/5433/files/kesakaxukuki.pdf
    • https://cdn.shopify.com/s/files/1/0431/0840/1316/files/2390156417.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58143530911.pdf
    • https://cdn.shopify.com/s/files/1/0438/2975/6066/files/xipuzofoxasasefib.pdf
    • https://cdn.shopify.com/s/files/1/0433/0412/4580/files/19925428880.pdf
    • https://cdn.shopify.com/s/files/1/0433/0366/5822/files/ruvobudugozuxozamim.pdf
    • https://cdn.shopify.com/s/files/1/0433/6104/2591/files/76552264639.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_off0000484e.bin
52c3120ab32cefd451bc3ba05f1b899f14dfd0ae936d2cca6ce44f8cb04db1d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x484E 5220 bytes
font_01_sfnt_off00005a26.bin
3a68726b9a2e3a365e0bf811ad88db287e4d02832594d7b0207c342ff2ae0bcf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A26 10376 bytes

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