Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcb8978a6d5d676d…

MALICIOUS

PDF

45.0 KB Created: 2020-09-02 00:22:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54f0e27d512e6e78bb423df323dd9fcc SHA-1: d484d87452f0e5a4abba3abe286c84be845130af SHA-256: dcb8978a6d5d676d8380e67736babba08c17afa5b171048c04b41b4f157afad2
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 pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, including one that leads to a potentially malicious redirector. The document body, though heavily obfuscated, contains the same malicious URL, suggesting an attempt to direct the user to a harmful site. No scripts were extracted from this sample.

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=transformers+3+sentinel+prime+wallpaper
    • https://static.usrfiles.com/ugd/81ef4b_7492ea8ba9664579b85a8155c63959b1.pdf
    • https://static.usrfiles.com/ugd/b972d5_159e41c6f53c4526b9d4dfcd90ee751f.pdf
    • https://static.usrfiles.com/ugd/2f3ac6_37c86662ca0d4414aab35584fc008f4a.pdf
    • https://static.usrfiles.com/ugd/ea5d7b_fd28e193750e436db59b18a9293ae9c1.pdf
    • https://static.usrfiles.com/ugd/ddb60a_b55a51d1fd14425fa824506821e1de24.pdf
    • https://cdn.shopify.com/s/files/1/0434/5056/4773/files/career_path_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/4606/7621/files/wasibilaxoraladuteroxavud.pdf
    • https://cdn.shopify.com/s/files/1/0431/4939/4080/files/galvanized_steel_sheet_uses.pdf
    • https://cdn.shopify.com/s/files/1/0440/1856/5270/files/fashion_color_matching_guide.pdf
    • https://static.usrfiles.com/ugd/29c71c_02bf0128b09045c683f6182625958ea7.pdf
    • https://static.usrfiles.com/ugd/5cd33b_6d1bdd82dc7b43c2859829087e2ab660.pdf
    • https://static.usrfiles.com/ugd/11f207_b5d60c89fe0448c4909684ce8c9c7ec9.pdf
    • https://static.usrfiles.com/ugd/b8c837_0abedf76d50e44fa9d421f8f6bf31cf9.pdf
    • https://static.usrfiles.com/ugd/4f92c1_7fa40f37bbe84b0ebe0277dbd65da105.pdf
    • https://cdn.shopify.com/s/files/1/0434/4525/6344/files/sujunuxulodifuzemaj.pdf
    • https://cdn.shopify.com/s/files/1/0431/3802/3592/files/vusikifabopilones.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://static.usrfiles.com/ugd/11f207_

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000050c0.bin
fdc6309b0b49807ad25eabea7958cd967552887a2c17e36f77e0f626dfb47d98
pdf-font-stream PDF embedded font (sfnt) at offset 0x50C0 5040 bytes
font_01_sfnt_off000061cb.bin
f77416e6750ecc8ecf66ebf2774322a75c0caea041057f69b0d2c18bca07ed00
pdf-font-stream PDF embedded font (sfnt) at offset 0x61CB 9876 bytes
font_02_sfnt_off000083c1.bin
bc1c1644e30597ae0beaac312b9749a82b64e26c109397326cdc67fdbaf2fe17
pdf-font-stream PDF embedded font (sfnt) at offset 0x83C1 16036 bytes
font_03_sfnt_off00009828.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x9828 4324 bytes