Malicious PDF — malware analysis report

Static analysis result for SHA-256 5333c3082aa90e2b…

MALICIOUS

PDF

41.5 KB Created: 2020-08-30 21:01:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e53c49b994b3b4c1c05a1e8750c0fd81 SHA-1: de404fcf023c6b3038ac79b81ba91d0c2589a518 SHA-256: 5333c3082aa90e2b9c62c07587b6a07e5a05e48ee3316d0f0509660e3c2189ad
162 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'The adventures of tintin apk data adreno', and the PDF_SEO_LINK_FARM heuristic suggests a large number of links were generated. The SE_PASSWORD_ARCHIVE_LURE heuristic indicates the document may be part of a multi-stage attack involving a password-protected archive.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/wix?keyword=the+adventures+of+tintin+apk+data+adreno
    • https://cdn.shopify.com/s/files/1/0454/7074/4742/files/78763662997.pdf
    • https://cdn.shopify.com/s/files/1/0431/3061/8011/files/gejoxepawokesutowipadefu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7655/8746/files/libro_para_colorear_de_caballos.pdf
    • https://cdn.shopify.com/s/files/1/0431/3543/4901/files/70336410154.pdf
    • https://cdn.shopify.com/s/files/1/0433/2594/8072/files/99232713394.pdf
    • https://cdn.shopify.com/s/files/1/0435/6833/2968/files/medir_con_vernier.pdf
    • https://cdn.shopify.com/s/files/1/0438/3352/4386/files/bohemian_rhapsody_easy_piano_sheet_music_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/7706/6135/files/imperial_death_march.pdf
    • https://cdn.shopify.com/s/files/1/0435/9582/5320/files/bebegufodaresipeba.pdf
    • https://static.usrfiles.com/ugd/837d34_2cc9ed04efda41dcad6cdbe1c3158c06.pdf
    • https://static.usrfiles.com/ugd/cbdbb6_c1ff9a13ae74486b88a48edca2e4c0d0.pdf
    • https://static.usrfiles.com/ugd/158fb9_8c3a904b98644216a7c0f9d9820803ca.pdf
    • https://static.usrfiles.com/ugd/b8c837_591654e411f94a9eab90d94087a75b17.pdf
    • https://static.usrfiles.com/ugd/b8c837_f332d745aa2b48bc8a08515fda18557a.pdf
    • https://static.usrfiles.com/ugd/cc03df_e385d98300724a69928bdbfc640bafe6.pdf
    • https://static.usrfiles.com/ugd/ad2ade_79e78fc66c794cf5a15cbd409fa8224f.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_off00006062.bin
6826ee23f67ded8c1994623757d2e77f150f4be438eb1ba74a4ef0dc1a0124bc
pdf-font-stream PDF embedded font (sfnt) at offset 0x6062 5168 bytes
font_01_sfnt_off000071f6.bin
12904d27af7b0c21b225cf7ed1e7d80573ee09e232e73f31e49ff36be5190e1c
pdf-font-stream PDF embedded font (sfnt) at offset 0x71F6 11300 bytes