Malicious PDF — malware analysis report

Static analysis result for SHA-256 a368e23e09015d23…

MALICIOUS

PDF

43.6 KB Created: 2020-08-16 20:39:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 921923906bb89448abf872648df16874 SHA-1: ccc35b743070cac3a87a69a6c7d30d811b22db7d SHA-256: a368e23e09015d234969ea0f34ff25a5c9f6249cb7086f8bbde5f1a994e75709
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=acdsee+pro+8+64+bit+free'. Additionally, it exhibits a PDF link farm heuristic, with many links pointing to Shopify domains, one of which is 'https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86556218032.pdf'. The presence of a visual download button lure further supports the malicious intent. The document body, though heavily obfuscated, contains references to 'acdsee pro 8 64 bit free' and the URLs, suggesting a software download lure.

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.cc/pify?keyword=acdsee+pro+8+64+bit+free
    • http://files.gilliancarmoodie.com/uploads/1/3/0/7/130739069/ninerofusukuwibosu.pdf
    • http://files.myprojectindia.org/uploads/1/3/0/7/130775413/180464.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86556218032.pdf
    • https://cdn.shopify.com/s/files/1/0431/8432/4770/files/15580936177.pdf
    • https://cdn.shopify.com/s/files/1/0432/6467/1906/files/physics_for_scientist_and_engineers_solution.pdf
    • https://cdn.shopify.com/s/files/1/0429/8270/3257/files/acid_rain_chemistry_project.pdf
    • https://cdn.shopify.com/s/files/1/0434/1009/6284/files/90143201058.pdf
    • https://cdn.shopify.com/s/files/1/0434/2890/5127/files/buxowafitikeforajigawe.pdf
    • https://cdn.shopify.com/s/files/1/0435/9582/5320/files/902508756.pdf
    • https://cdn.shopify.com/s/files/1/0433/3862/9275/files/13433893257.pdf
    • https://cdn.shopify.com/s/files/1/0437/4819/6506/files/adding_decimals_horizontal_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0435/6833/2968/files/transfer_excel_to_google_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0432/1044/0862/files/kokopo.pdf
    • https://cdn.shopify.com/s/files/1/0429/7300/3939/files/wurewobafezisonaf.pdf
    • https://cdn.shopify.com/s/files/1/0432/4933/6483/files/batman_arkham_origins_guide.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_off00006be0.bin
a35b8897c0be6637ed2f2b40a8bd650f1985a63a1cc6eecbdbd3ac3578ab43ca
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE0 5472 bytes
font_01_sfnt_off00007e93.bin
998af17788fecf7c1838d677e214a617e9b82a9cddbd2196f48287280b6fa71e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E93 10356 bytes