Malicious PDF — malware analysis report

Static analysis result for SHA-256 99a5602e07843e87…

MALICIOUS

PDF

33.7 KB Created: 2020-08-25 11:19:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65cfabba53fa55acb3cec2b99445f14f SHA-1: 0cb8786cbbea605c75353969f98dd684f43ba784 SHA-256: 99a5602e07843e8718cb3e5edbfd3f72fe64c620a20f0605ef8122710b668ec1
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though partially corrupted, contains the URL 'https://ttraff.com/pify?keyword=ardene+application+form', suggesting a lure for an application form that redirects to malicious infrastructure. No scripts were extracted from this sample.

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=ardene+application+form
    • http://zunamutaf.gmnstreetwear.com/uploads/1/3/1/3/131384260/xazufemuf_xexuvapumesa_memek_nasepa.pdf
    • http://kugata.charlescitychiropractic.com/uploads/1/3/2/8/132814439/felasikemivubat.pdf
    • http://files.alaynewegner.com/uploads/1/3/1/4/131407565/6890368.pdf
    • http://files.lenrechphoto.com/uploads/1/3/1/6/131636956/pizolakaxuzaxapo.pdf
    • https://cdn.shopify.com/s/files/1/0433/9476/0862/files/wuwuvuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/2940/5600/files/appointment_letter_for_teachers.pdf
    • https://cdn.shopify.com/s/files/1/0432/3000/3358/files/medical_release_form_for_minor.pdf
    • https://cdn.shopify.com/s/files/1/0431/1495/4908/files/ramuvevozupenosujam.pdf
    • https://cdn.shopify.com/s/files/1/0432/2007/4663/files/80822707311.pdf
    • https://cdn.shopify.com/s/files/1/0451/0013/8661/files/parrot_birds_photos_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/9322/0766/files/goniferunonako.pdf
    • https://cdn.shopify.com/s/files/1/0431/2806/2109/files/28819167908.pdf
    • https://cdn.shopify.com/s/files/1/0431/1433/2309/files/vigeb.pdf
    • https://cdn.shopify.com/s/files/1/0440/7685/9544/files/english_phrases_with_meaning_in_marathi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2964/2911/files/97769413925.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_off000046f2.bin
adf017d8d307d72dde79252977609a7bc189964f13a6293c450f41fa5c9e6447		 pdf-font-stream PDF embedded font (sfnt) at offset 0x46F2 5112 bytes
font_01_sfnt_off00005835.bin
3e13ebbd82dd3e9fc5fef9258611f8c89ea1a2412775286b687a5c7fd49415e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5835 10012 bytes

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