Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ea1516b012457c0…

MALICIOUS

PDF

70.3 KB Created: 2020-08-07 04:29:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e6c3becfdee1d65a463cf9f06049d30 SHA-1: 2d438ed9b0f45e70d7bb736484617be4a606c7ad SHA-256: 2ea1516b012457c054e97662e2f95fb5694d4fe351ea52313b69bafb83517c26
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic indicating it's a malicious redirector link, pointing to 'ttraff.ru'. This URL is presented within the document body, disguised as a download link. The file also exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or phishing attempts.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/pify?keyword=amoeba+sisters+video+recap+of+meiosis+worksheet+answers+pdf
    • http://files.whitethornherbals.com/uploads/1/3/1/1/131164531/9457913.pdf
    • http://files.leadhillps.com/uploads/1/3/0/8/130874539/pugapakitav_zoloj_deziguwirelul.pdf
    • http://files.transcendingconsciousness.com/uploads/1/3/0/8/130814351/346f0fe190fbbf.pdf
    • https://cdn.shopify.com/s/files/1/0431/0355/1645/files/4316327525.pdf
    • https://cdn.shopify.com/s/files/1/0428/8312/1319/files/rowonurexusufapofu.pdf
    • https://cdn.shopify.com/s/files/1/0437/2840/4632/files/25991461371.pdf
    • https://cdn.shopify.com/s/files/1/0440/8341/3142/files/download_nkjv_bible_file.pdf
    • https://cdn.shopify.com/s/files/1/0433/4921/3349/files/cidco_lottery_2020_september_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/8909/1998/files/96421261297.pdf
    • https://cdn.shopify.com/s/files/1/0429/2296/7207/files/82296189226.pdf
    • https://cdn.shopify.com/s/files/1/0435/6859/5112/files/25735253303.pdf
    • https://cdn.shopify.com/s/files/1/0432/1535/6067/files/pafizobewadamol.pdf
    • https://cdn.shopify.com/s/files/1/0438/8660/8552/files/ar_600_8_11.pdf
    • https://cdn.shopify.com/s/files/1/0434/8300/5093/files/17430080364.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_off0000d538.bin
bd612877af8295aa22aba8f99e10d8e5b086bdb66788a26d6180ec706adf4fa1
pdf-font-stream PDF embedded font (sfnt) at offset 0xD538 5708 bytes
font_01_sfnt_off0000e88e.bin
d0dbdc30fa21aa2af94aa8669bc526befa6abc5daeae35f1cf79928f09547474
pdf-font-stream PDF embedded font (sfnt) at offset 0xE88E 10288 bytes