Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf86239d2b2a3e7b…

MALICIOUS

PDF

45.9 KB Created: 2020-08-08 05:19:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46b1fd5c13886c7f738700b263da0648 SHA-1: c54aa0c639832a61313ab4d1f6ec4f7d91441d99 SHA-256: bf86239d2b2a3e7bde35cc316cfb2d541e64950c39bf91aecb9b14cdd6d1fc18
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects through ttraff.com. This indicates a link farm designed to obscure the final destination, which is likely malicious. The document body itself is heavily obfuscated and contains the primary malicious URL, suggesting a lure to trick users into clicking through to a potentially harmful site.

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.com/pify?keyword=pneumatic+cylinder+calculation+formula+pdf
    • http://files.abrenian.com/uploads/1/3/0/8/130873804/473ec86e8.pdf
    • http://mixime.fredabedi.com/uploads/1/3/1/6/131636655/bufuzesubapokawi.pdf
    • http://files.latebloompaperie.com/uploads/1/3/0/9/130969505/popajibo_zisanaru_xubak_natomufofikepax.pdf
    • http://files.allfloorsinteriors.com/uploads/1/3/0/9/130969375/kexajize.pdf
    • http://files.leonwebbillustration.com/uploads/1/3/1/3/131398110/fogafiweba-vebakax.pdf
    • https://cdn.shopify.com/s/files/1/0429/2427/7923/files/canon_powershot_s2_ls.pdf
    • https://cdn.shopify.com/s/files/1/0434/4909/0200/files/panasonic_bread_maker_recipes.pdf
    • https://cdn.shopify.com/s/files/1/0436/1905/7822/files/26044361815.pdf
    • https://cdn.shopify.com/s/files/1/0429/9423/7599/files/65992188968.pdf
    • https://cdn.shopify.com/s/files/1/0430/0832/7829/files/37977033007.pdf
    • https://cdn.shopify.com/s/files/1/0435/4709/9290/files/cancer_de_esofago_fisiopatologia.pdf
    • https://cdn.shopify.com/s/files/1/0434/4473/2065/files/23438887716.pdf
    • https://cdn.shopify.com/s/files/1/0427/9674/4871/files/47322968150.pdf
    • https://cdn.shopify.com/s/files/1/0434/1671/5429/files/wakesataniz.pdf
    • https://cdn.shopify.com/s/files/1/0429/7801/7443/files/faduwofesoderuf.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86562581376.pdf
    • https://cdn.shopify.com/s/files/1/0431/7439/6058/files/37082545396.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/
    • https://cdn.shopify.com/s/files/1/0430/0832/7829/files/37

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006888.bin
dd2ee2340cb034b3647d74904db487b41dc20d10db5ecd743dc246cc7a418c68
pdf-font-stream PDF embedded font (sfnt) at offset 0x6888 5108 bytes
font_01_sfnt_off000079cf.bin
61d0390795ae65eac86e15b24ecf6ffc3869c4a4d26247f7a0f2f84a086eadc0
pdf-font-stream PDF embedded font (sfnt) at offset 0x79CF 9908 bytes
font_02_sfnt_off00009bb8.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x9BB8 4324 bytes