Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca062fef68edc2bb…

MALICIOUS

PDF

48.9 KB Created: 2020-08-02 05:17:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59125781f728816ae9ab64287599b7a0 SHA-1: 769ba6d0e10bb317789906d8a85f27acdb07b073 SHA-256: ca062fef68edc2bba28ca6286203928c7a23ba3de98ab9d4c9e116b94a4ead56
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links, https://ttraff.ru/pify?keyword=python+timezone+list, is identified as a malicious redirector. This suggests the document's purpose is to direct users to malicious infrastructure through a deceptive link farm.

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=python+timezone+list
    • http://files.texascityhschoir.com/uploads/1/3/1/8/131856907/muduvuditotolalaf.pdf
    • http://files.mathewmadlyn.com/uploads/1/3/1/3/131381363/6457083.pdf
    • http://files.shortsaleapproved.org/uploads/1/3/0/7/130775143/1455546.pdf
    • https://cdn.shopify.com/s/files/1/0433/8194/8567/files/wabibofelupojili.pdf
    • https://cdn.shopify.com/s/files/1/0433/6405/7247/files/nutidonukolikivanale.pdf
    • https://cdn.shopify.com/s/files/1/0432/7368/3112/files/91032691577.pdf
    • https://cdn.shopify.com/s/files/1/0432/6513/0658/files/nuvogar.pdf
    • https://cdn.shopify.com/s/files/1/0428/0261/0335/files/king_james_bible_dictionary_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/3075/8044/files/41178210581.pdf
    • https://cdn.shopify.com/s/files/1/0430/0665/6666/files/dejevoxofedodovavumora.pdf
    • https://cdn.shopify.com/s/files/1/0437/6081/2190/files/vugoli.pdf
    • https://cdn.shopify.com/s/files/1/0435/5863/3631/files/zureki.pdf
    • https://cdn.shopify.com/s/files/1/0431/6987/4080/files/98376428177.pdf
    • https://cdn.shopify.com/s/files/1/0429/2270/5063/files/dofubevokagagekaradari.pdf
    • https://cdn.shopify.com/s/files/1/0429/7352/8213/files/sadeforimuxibefavet.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_off00006e0a.bin
d1dc7efee37f09bbf1c81b038a846b3c1d303a05e867578c36fea824eca98650		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E0A 4560 bytes
font_01_sfnt_off00007d5b.bin
a852ebab73208906e4eaec8d2d4313da56852034877d1d58befa35af3bbe579a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D5B 13736 bytes
font_02_sfnt_off0000a899.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA899 4324 bytes

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