Malicious PDF — malware analysis report

Static analysis result for SHA-256 363a917374ad5c47…

MALICIOUS

PDF

34.3 KB Created: 2020-08-14 14:41:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65f41112677f869d514cb60990b8339c SHA-1: d15efadb821e2b990fd4283d7f5abdf6acf0ae21 SHA-256: 363a917374ad5c471f60fe41cdd9fc11b7a9016099fa8dd76bfb867deda7a86c
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains the URL https://ttraff.com/pify?keyword=booklet+design+vector+free, which is likely intended to lead the user to a malicious site. The presence of numerous Shopify links suggests an attempt to blend in with legitimate content while distributing malicious redirects.

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=booklet+design+vector+free
    • http://files.talsegevphotos.com/uploads/1/3/1/3/131398555/kiwuvibekuwotiwaxaja.pdf
    • http://files.mgetsinslp.com/uploads/1/3/1/6/131637316/podanobabi.pdf
    • http://jojevul.clanchildhealth.org/uploads/1/3/1/4/131438563/putuxexiwone.pdf
    • http://razinek.activatingauthenticity.com/uploads/1/3/1/6/131606490/gezuwelivotuwisiga.pdf
    • https://cdn.shopify.com/s/files/1/0435/8501/1871/files/ludupe.pdf
    • https://cdn.shopify.com/s/files/1/0430/0262/6202/files/70957885829.pdf
    • https://cdn.shopify.com/s/files/1/0433/4845/9675/files/thomas_aquinas_summa_theologica.pdf
    • https://cdn.shopify.com/s/files/1/0445/8138/8452/files/free_it_ebooks_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/56679469921.pdf
    • https://cdn.shopify.com/s/files/1/0430/1311/1961/files/vojibobipopuw.pdf
    • https://cdn.shopify.com/s/files/1/0435/2340/8032/files/diwarewod.pdf
    • https://cdn.shopify.com/s/files/1/0435/5453/7624/files/ferebunabibedexoxu.pdf
    • https://cdn.shopify.com/s/files/1/0438/8651/0232/files/pededuludovivaroge.pdf
    • https://cdn.shopify.com/s/files/1/0437/4275/7029/files/atrahasis_epic_full_text.pdf
    • https://cdn.shopify.com/s/files/1/0432/4743/5940/files/xokenegujuni.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_off00004aa9.bin
ad0c9db7a4cbe45b4680c86f7c935f8fa25f377acda37df5ba5700d08c5c4717		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4AA9 5152 bytes
font_01_sfnt_off00005c4d.bin
84282dab2f30c1c63d9576224ec9c93ee495eccbee7620f73d313739042e5e2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C4D 9412 bytes

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