Malicious PDF — malware analysis report

Static analysis result for SHA-256 d69ba6f2bd821805…

MALICIOUS

PDF

45.0 KB Created: 2020-08-12 13:02:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6bfc061a2b9108e6e00a212e26928817 SHA-1: cca5348df64e42762617d1e142b54c7915b6c796 SHA-256: d69ba6f2bd821805993b816b5fadc7225afe05459c0808f6a601c1c873353a29
120 Risk Score

Malware Insights

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

The PDF file contains a link farm, with one prominent link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to nutritional treatment for anorexia and bulimia, likely serving as a lure. The primary malicious IOC is the redirector URL, which is designed to lead users to further malicious content.

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=tratamiento+nutricional+para+anorexia+y+bulimia+pdf
    • http://files.aboutnatureco.com/uploads/1/3/0/9/130969652/segakifez-nuduxed.pdf
    • http://rudak.themerryorganizer.com/uploads/1/3/2/7/132710657/8554480.pdf
    • http://files.trishgipsonphysio.com/uploads/1/3/0/7/130776542/ranenim.pdf
    • https://cdn.shopify.com/s/files/1/0431/3301/0082/files/4669362179.pdf
    • https://cdn.shopify.com/s/files/1/0437/9148/3042/files/madea_plays_online_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/3811/3955/files/250024434.pdf
    • https://cdn.shopify.com/s/files/1/0428/3976/9254/files/bill_of_attainder_example.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fuwemosuwizukuxitakalav.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jufozigazagapuji.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/rikano.pdf
    • https://cdn.shopify.com/s/files/1/0429/2762/0249/files/sisowijezuwog.pdf
    • https://cdn.shopify.com/s/files/1/0432/4671/5040/files/nevafefafukulagutero.pdf
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/giwusevodivifajotat.pdf
    • https://cdn.shopify.com/s/files/1/0437/1572/3414/files/81903458313.pdf
    • https://cdn.shopify.com/s/files/1/0431/8085/1364/files/debit_voucher_format.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_off00006d5b.bin
21db9c77805a242761511175544f261b110f8abdb684ee1682ca7d6ca6212f6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D5B 5380 bytes
font_01_sfnt_off00007f94.bin
588188a399723769b19ee5d1d379bbbbacb6f802dc2b40c9ac84589f7c53040b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F94 11432 bytes

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