Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1f7c1c4ed5c55e9…

MALICIOUS

PDF

59.5 KB Created: 2020-08-30 23:15:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57bb7f975500d888d887497b6b546572 SHA-1: 4949762bb7a0c32d07d37d24c5f3887b0fa806ba SHA-256: f1f7c1c4ed5c55e9be37997621d32b981652e87c617457e976ca6822d3689475
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many of which are likely intended to direct users to malicious or spam content. The document body, though heavily obfuscated, contains the suspicious URL, reinforcing the malicious intent.

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/wix?keyword=morrison+boyd+organic+chemistry+7th
    • https://cdn.shopify.com/s/files/1/0432/0398/5570/files/astm_a370_14_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/4745/0789/files/theological_dictionary_of_the_new_testament_kittel.pdf
    • https://cdn.shopify.com/s/files/1/0434/3834/2311/files/52066818470.pdf
    • https://cdn.shopify.com/s/files/1/0433/3076/4955/files/catalogo_de_mary_kay_julio_2020.pdf
    • https://static.usrfiles.com/ugd/b8c837_8a1106e07fa74690aa14897735df7630.pdf
    • https://static.usrfiles.com/ugd/b8c837_48aad82aea9f4dc9ae1c5ac7a2329b86.pdf
    • https://static.usrfiles.com/ugd/23e9be_e37abf911c7142a1b72c94bd6a921d41.pdf
    • https://static.usrfiles.com/ugd/2e4eb4_20711b44354b48b9847d5e6953d721d7.pdf
    • https://static.usrfiles.com/ugd/50de67_d5e5f6646cad4d04b31c2b8fc57b933f.pdf
    • https://static.usrfiles.com/ugd/086daf_d56b4bfc44dc4b6b9faf18d49623667e.pdf
    • https://static.usrfiles.com/ugd/b8c837_bde42127c2db462f8736965f0738237d.pdf
    • https://static.usrfiles.com/ugd/e32576_7ba964fa2f9244f5a49b777e85aafef9.pdf
    • https://cdn.shopify.com/s/files/1/0434/7022/5574/files/doenas_de_chagas.pdf
    • https://cdn.shopify.com/s/files/1/0438/9198/2491/files/28102638411.pdf
    • https://cdn.shopify.com/s/files/1/0430/8133/4933/files/exalted_broken_winged_crane.pdf
    • https://cdn.shopify.com/s/files/1/0428/3544/3871/files/51394900521.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_off00009486.bin
b2a2cdf88431f466c3ac14df3dcb9d38b381a9b035e26781754a274c09eeb265
pdf-font-stream PDF embedded font (sfnt) at offset 0x9486 5648 bytes
font_01_sfnt_off0000a79e.bin
afe21697bd2ed0495afab747c09eb3b9bc5b110b83688705df0469b88f42da48
pdf-font-stream PDF embedded font (sfnt) at offset 0xA79E 10500 bytes
font_02_sfnt_off0000cba9.bin
41b6a68d16529be0ab55a3888564f26b0d9265ce89613723b0c17fa47b18c0df
pdf-font-stream PDF embedded font (sfnt) at offset 0xCBA9 16060 bytes