Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed62360aadad5dd0…

MALICIOUS

PDF

56.2 KB Created: 2020-09-02 10:12:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ed2a5ff0f2da2902e833876091e21afd SHA-1: f659f5f8ed24b0afaf1cfc0d3fea8f7a1270fa89 SHA-256: ed62360aadad5dd096c31ab75bfbcf680e571142add53c1cf551b2ce55db9ebd
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link farm with 17 external PDF links, many hosted on shopify.com, and a primary link to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/wix?keyword=post+gastrectomy+nutrition+guidelines', suggesting a lure related to medical information. The presence of a callback phishing lure further supports a social engineering attack. The primary malicious IOC is the redirector URL.

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=post+gastrectomy+nutrition+guidelines
    • https://cdn.shopify.com/s/files/1/0432/3550/8387/files/96814413233.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/54975672832.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45035229099.pdf
    • https://cdn.shopify.com/s/files/1/0461/4180/0601/files/kegefewipekifebejipikakav.pdf
    • https://cdn.shopify.com/s/files/1/0431/6423/7988/files/75415691745.pdf
    • https://cdn.shopify.com/s/files/1/0434/1356/9687/files/buy_trenbolone_enanthate.pdf
    • https://cdn.shopify.com/s/files/1/0457/6061/0460/files/excel_dashboard_guide.pdf
    • https://cdn.shopify.com/s/files/1/0461/7578/1018/files/lototinemexe.pdf
    • https://cdn.shopify.com/s/files/1/0429/0933/5715/files/check_all_subreddits.pdf
    • https://static.usrfiles.com/ugd/f65175_fd07d414d7524efaa2ad29d50a8147fb.pdf
    • https://static.usrfiles.com/ugd/b8c837_9651985c44f0437dbdaa0d365ca0ab8f.pdf
    • https://static.usrfiles.com/ugd/227d0f_76ab4a9ee9a64d198d22b5eecb583e8e.pdf
    • https://static.usrfiles.com/ugd/ae059d_fae816fe04ad45d285d7535c02b97256.pdf
    • https://cdn.shopify.com/s/files/1/0447/8402/5751/files/23899777322.pdf
    • https://cdn.shopify.com/s/files/1/0433/9249/9877/files/fawuwazofazegosirotawef.pdf
    • https://cdn.shopify.com/s/files/1/0431/3926/8774/files/xijixawonosanukufo.pdf
    • https://cdn.shopify.com/s/files/1/0433/2906/1032/files/fluke_435-_ii_datasheet.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_off00009033.bin
7bd630ee7abc4bbef45ce61f7e6a976da6271c4aa799723ec41db0b416a46ccc
pdf-font-stream PDF embedded font (sfnt) at offset 0x9033 5244 bytes
font_01_sfnt_off0000a1ef.bin
f6bacacc12b31ab5bf405d2476029c86ef048dffea3f747f63a8dd1cb4f4c840
pdf-font-stream PDF embedded font (sfnt) at offset 0xA1EF 10548 bytes
font_02_sfnt_off0000c5df.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xC5DF 4324 bytes