Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf42a774b2386d43…

MALICIOUS

PDF

38.0 KB Created: 2020-09-04 06:54:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6175073b59c8a1faec1d31b14ed57932 SHA-1: 4dc338f140e3f86b3eafded9314c71cc322f26fe SHA-256: bf42a774b2386d43a2b0996b56abeebbe193e7c86dbcd39ec1eb47da491e48a9
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, directing users to 'https://ttraff.me/wix?keyword=odia+dj+song+album'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links to external PDFs. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing the lure. The primary attack pattern involves social engineering through a deceptive link, likely leading 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.me/wix?keyword=odia+dj+song+album
    • https://static.usrfiles.com/ugd/0c8cc8_375c3644f20545d1acaa3aa52b7ff243.pdf
    • https://static.usrfiles.com/ugd/9b33c5_5a99c70c514b4d60a37756655c917946.pdf
    • https://static.usrfiles.com/ugd/739437_11ce9076f833459ab4427713ec118d08.pdf
    • https://static.usrfiles.com/ugd/bcfc12_7c6b925614834d62aa566b0c02157b56.pdf
    • https://static.usrfiles.com/ugd/b8c837_85e4f36a28ce4abc9fa76ee4cbd4a76e.pdf
    • https://static.usrfiles.com/ugd/7198c1_fe761f9378c44a4cbee76f3569f1c68f.pdf
    • https://static.usrfiles.com/ugd/110ef3_2b3d8e2892de4de09da7a838f355f77c.pdf
    • https://static.usrfiles.com/ugd/0c268c_33892dce4eb4499689d14a10afb80c3a.pdf
    • https://static.usrfiles.com/ugd/ab0441_32951975bd354f8bb2939785694f77c6.pdf
    • https://static.usrfiles.com/ugd/8de238_70c0ec3d62c94bb38903f86307fe04a0.pdf
    • https://cdn.shopify.com/s/files/1/0430/0800/0163/files/mail_merge_in_word.pdf
    • https://cdn.shopify.com/s/files/1/0440/7492/6230/files/35360810354.pdf
    • https://cdn.shopify.com/s/files/1/0428/8551/3379/files/86014156771.pdf
    • https://cdn.shopify.com/s/files/1/0432/8207/1716/files/pijodawufaxan.pdf
    • https://cdn.shopify.com/s/files/1/0432/8921/5129/files/nodejagilas.pdf
    • https://cdn.shopify.com/s/files/1/0433/8620/8406/files/tokyo_metro_map_japanese.pdf
    • https://cdn.shopify.com/s/files/1/0432/5857/7064/files/35814614219.pdf
    • https://cdn.shopify.com/s/files/1/0437/6500/6494/files/apocryphal_gospels.pdf
    • https://cdn.shopify.com/s/files/1/0435/4070/9527/files/surah_al_mulk_latin_dan_arab.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_off0000566d.bin
cca5dfda2c9cbdc58c1192f7a9862d27a5c5bdac467da394991ffe8e8a5d2c86
pdf-font-stream PDF embedded font (sfnt) at offset 0x566D 5292 bytes
font_01_sfnt_off00006859.bin
db885c2f561c56905b9c6eb87df346e23fd351020b73add1e9700f97a8756b84
pdf-font-stream PDF embedded font (sfnt) at offset 0x6859 10100 bytes