Malicious PDF — malware analysis report

Static analysis result for SHA-256 8770064f31ac9fdd…

MALICIOUS

PDF

42.0 KB Created: 2020-08-31 03:05:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f708cf00ad1a8856c04fb50df689612 SHA-1: 08e3614fa5d262d149b618f0285c6748516a7c6b SHA-256: 8770064f31ac9fdd9041f7a05bb8f6fba044652ea21d609fb30bcf36cedb1368
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs. One prominent URL, 'https://ttraff.com/wix?keyword=word+family+powerpoints', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and several others pointing to Shopify-hosted PDFs, suggesting a coordinated effort to distribute links, potentially for SEO manipulation or to host further malicious content. The presence of a malicious redirector indicates a high likelihood of malicious intent.

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/wix?keyword=word+family+powerpoints
    • https://cdn.shopify.com/s/files/1/0461/9400/0023/files/stokstad_art_history.pdf
    • https://cdn.shopify.com/s/files/1/0437/3915/2535/files/53881999147.pdf
    • https://cdn.shopify.com/s/files/1/0427/5837/3542/files/2009406566.pdf
    • https://cdn.shopify.com/s/files/1/0431/5178/6135/files/60449368733.pdf
    • https://cdn.shopify.com/s/files/1/0431/2000/1178/files/free_ancestry_family_tree_template.pdf
    • https://cdn.shopify.com/s/files/1/0430/9535/9641/files/determinacion_de_punto_de_fusion.pdf
    • https://cdn.shopify.com/s/files/1/0437/2358/7733/files/signos_y_sintomas_del_cancer_de_ovario.pdf
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/jetafijipebiturewaniwe.pdf
    • https://static.usrfiles.com/ugd/e2b09b_2c3fe98631764a79889f61d268c95610.pdf
    • https://static.usrfiles.com/ugd/e4a001_3562c93425af42f6bc9d9f45cc2a7250.pdf
    • https://static.usrfiles.com/ugd/d9d1f5_c4703afd2558453a944c5b114b0adf7d.pdf
    • https://static.usrfiles.com/ugd/c7ef1a_33b8285e4606480e9e67a308da919b55.pdf
    • https://static.usrfiles.com/ugd/b8c837_7e02755ea7f64cb2ba3cd4a7f15fa134.pdf
    • https://static.usrfiles.com/ugd/73cb9e_883b647e97384236ab01bd14c7301868.pdf
    • https://static.usrfiles.com/ugd/b91566_e36534054b7b49f09d9442d23fc592c5.pdf
    • https://static.usrfiles.com/ugd/0c4177_c4124a4a441b456ca835c932322e47f5.pdf
    • https://static.usrfiles.com/ugd/ae059d_db74ff70dd38464a8a1cc2a48daa4f62.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_off00006624.bin
8cbd251130973b42339b0697e7008454fe184ae069e5c0db1b0568536f7f2966
pdf-font-stream PDF embedded font (sfnt) at offset 0x6624 5396 bytes
font_01_sfnt_off00007889.bin
d92eccc27dd4c41b909f489f36d4b673c013081aa043b817fab965a625c59829
pdf-font-stream PDF embedded font (sfnt) at offset 0x7889 10032 bytes