Malicious PDF — malware analysis report

Static analysis result for SHA-256 f091841d6d89fea9…

MALICIOUS

PDF

60.3 KB Created: 2020-09-02 01:59:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73d602ee7612ae4396ffe4f574b45b7b SHA-1: 75dc50074f58c1e2daccbf13a2f9dcf78f6807cc SHA-256: f091841d6d89fea9e598c1e7741fcde039f299a2845f7bb99b3f902ef956a685
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, specifically pointing to 'https://ttraff.cc/pify?keyword=beatles+blue+album+free'. This indicates a social engineering lure designed to redirect the user to malicious infrastructure. The document body, though heavily obfuscated, also contains the same URL, reinforcing its role as the primary lure. The presence of numerous other benign-looking PDF links suggests a link farm tactic to improve search engine visibility for the lure.

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=beatles+blue+album+free
    • https://static.usrfiles.com/ugd/d1d005_8f01326def7c4cec8f9fef5920c0205f.pdf
    • https://static.usrfiles.com/ugd/b8c837_375c03069b3d4bc0bc11542149eb8ceb.pdf
    • https://static.usrfiles.com/ugd/1f5cef_c89609b29a284032bcd577867cc5c9b6.pdf
    • https://static.usrfiles.com/ugd/0c268c_f1b0c58ffdcc4a7da4b8685fd8baafe2.pdf
    • https://static.usrfiles.com/ugd/b8c837_d2cebcae217b434ea6de0aeef9b1e0b3.pdf
    • https://cdn.shopify.com/s/files/1/0430/5285/9543/files/42383532406.pdf
    • https://cdn.shopify.com/s/files/1/0430/7877/9047/files/suwijesugupazesobemadaneb.pdf
    • https://cdn.shopify.com/s/files/1/0429/6992/3740/files/kufupetagukoxugarigitaj.pdf
    • https://cdn.shopify.com/s/files/1/0445/3181/0463/files/kirelojevavomo.pdf
    • https://cdn.shopify.com/s/files/1/0428/3524/7271/files/measures_of_multivariate_skewness_and_kurtosis_with_applications.pdf
    • https://static.usrfiles.com/ugd/fedf23_43dede6df60b4dccbb66c56badc3bcf3.pdf
    • https://static.usrfiles.com/ugd/b8c837_e8a828d5db344b34b4a16364c9714aa7.pdf
    • https://static.usrfiles.com/ugd/5cd33b_e2f8948481c243a2b77934b9d434ea84.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/1/0428/3524/7271/files/measures_of_multivariate_skewness_and_kurtosis_with_appl

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ef5.bin
5d1284680854c0338b631a6f053d275035415d0083956ed68efbbe97a1d1639a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF5 10356 bytes
font_01_sfnt_off0000a0ee.bin
ce940468ef125abb98df1a8dcd060f68f07870d5443a38bc365ce6e6e3fd3729
pdf-font-stream PDF embedded font (sfnt) at offset 0xA0EE 4720 bytes
font_02_sfnt_off0000b0f7.bin
cebda87171474a69fa88f70a064f3bcb636ee20d6a29d33ad4cefb2835450cc6
pdf-font-stream PDF embedded font (sfnt) at offset 0xB0F7 10660 bytes
font_03_sfnt_off0000d58a.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0xD58A 4324 bytes