Malicious PDF — malware analysis report

Static analysis result for SHA-256 96082e9abcd77b63…

MALICIOUS

PDF

42.9 KB Created: 2020-08-11 22:43:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 051a1c3e469d120f3ddc38a02de8f9b5 SHA-1: 574b7b253014e61f7da9182b4bef1f71e32e7e06 SHA-256: 96082e9abcd77b6354d95e8a247fea027ad2cebd54c7032f734d0c2043ad5b94
140 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify-hosted PDFs, likely for SEO manipulation or to obscure malicious redirects. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is used in conjunction with the lure of an 'Aetna provider appeal form'. The document body, though heavily obfuscated, contains the URL that leads to the malicious redirector. This suggests a phishing or scam attempt designed to lead the user to malicious infrastructure.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=aetna+provider+appeal+form+pdf
    • http://wonesasit.jorricmatthews.com/uploads/1/3/2/3/132302780/c8e55b1c.pdf
    • http://vazuduk.continentaldrifter.net/uploads/1/3/0/8/130874431/808507.pdf
    • http://files.wolvesdenranch.com/uploads/1/3/1/4/131411474/neneritowuve.pdf
    • http://wefodijov.vigocountyemergencycommunications.org/uploads/1/3/0/7/130775934/makodaxuzibi.pdf
    • http://files.northidahoblaze.com/uploads/1/3/0/7/130775607/ronazepezaxuxa-womonegiba.pdf
    • https://cdn.shopify.com/s/files/1/0439/2094/9403/files/anemia_por_deficiencia_de_vitamina_b12.pdf
    • https://cdn.shopify.com/s/files/1/0428/6955/5356/files/business_communication_process_and_product.pdf
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/jafidowozorukizoj.pdf
    • https://cdn.shopify.com/s/files/1/0440/6296/5912/files/fekovazo.pdf
    • https://cdn.shopify.com/s/files/1/0433/2358/8773/files/marerumovodulo.pdf
    • https://cdn.shopify.com/s/files/1/0435/8501/1871/files/tipemaw.pdf
    • https://cdn.shopify.com/s/files/1/0436/9544/0040/files/arginina_akg.pdf
    • https://cdn.shopify.com/s/files/1/0454/7693/7880/files/inherited_disorders_of_bilirubin_metabolism.pdf
    • https://cdn.shopify.com/s/files/1/0431/4939/4080/files/76878728696.pdf
    • https://cdn.shopify.com/s/files/1/0428/1306/3327/files/25966281820.pdf
    • https://cdn.shopify.com/s/files/1/0431/0152/0023/files/algebras_rings_and_modules.pdf
    • https://cdn.shopify.com/s/files/1/0433/2306/4488/files/3312614922.pdf
    • https://cdn.shopify.com/s/files/1/0431/6938/2568/files/xuzekusumafasasipigu.pdf
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/tebaturixolusiwumojokuka.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_off000069cd.bin
8679931d7ee173cc788b5db53227bb8cdfe7cfa667b857ebd0339c880d7f3c50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69CD 5060 bytes
font_01_sfnt_off00007af1.bin
5e64817ce32245238256e9a2bcfa46c35caa514b51af9a4029f7521fd2be5f7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF1 10388 bytes

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