Malicious PDF — malware analysis report

Static analysis result for SHA-256 19c3d6b6ee876f47…

MALICIOUS

PDF

43.1 KB Created: 2020-08-15 22:44:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ecde6ea7ed7dd8ea130ca63b94293ba SHA-1: d2865348e29d3da5dcef1966659599e640849430 SHA-256: 19c3d6b6ee876f47f79bac7f2b1b52e5b43c090cf47cc58d95f1906de2d0834c
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is presented to the user with a lure related to 'Android wear watch faces apk'. The file also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or redirection strategy. The primary malicious IOC is the redirector URL.

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.com/pify?keyword=android+wear+watch+faces+apk
    • http://files.myriversidefrenchcottage.com/uploads/1/3/1/3/131398268/4103021.pdf
    • http://files.themanemonogramonline.com/uploads/1/3/0/7/130776499/dilug.pdf
    • http://files.bearlakedental.com/uploads/1/3/2/6/132681342/5864819.pdf
    • https://cdn.shopify.com/s/files/1/0428/2528/5798/files/modidi.pdf
    • https://cdn.shopify.com/s/files/1/0434/2539/8945/files/50860594660.pdf
    • https://cdn.shopify.com/s/files/1/0440/3711/1958/files/juwibufojutoralaxil.pdf
    • https://cdn.shopify.com/s/files/1/0429/7873/8335/files/gagizuluvizidomejodup.pdf
    • https://cdn.shopify.com/s/files/1/0427/5470/3526/files/89827839074.pdf
    • https://cdn.shopify.com/s/files/1/0432/3164/1767/files/clean_code_summary.pdf
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/davabegoxulemiriwazop.pdf
    • https://cdn.shopify.com/s/files/1/0431/6967/7474/files/ludacris_roll_out.pdf
    • https://cdn.shopify.com/s/files/1/0431/1128/4893/files/rebemoguri.pdf
    • https://cdn.shopify.com/s/files/1/0433/2571/8678/files/pasigagewuvetasanofofovo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72707516801.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_off000064b3.bin
8b7e2923587e55db334a9a19f85f27d7ad7ea01deefc0c70ca63e591acdb8611		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64B3 5356 bytes
font_01_sfnt_off000076f6.bin
e7790e4dcb84b40a11b57767d0385dee32b1371d69cfc7afe432b8f85fb8a669		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76F6 12768 bytes

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