Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b7c7cba163f97d0…

MALICIOUS

PDF

40.2 KB Created: 2020-08-25 16:14:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40d9b93e04f675d2fad5798c52593d84 SHA-1: 7c7b23eca700a753a24ff5435a4b3fa1c6e4252d SHA-256: 2b7c7cba163f97d025a4180a673e02be6477da5fbbaada0b5f8250b607741565
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one specifically pointing to a known malicious redirector. The document body, though heavily corrupted, contains text related to a 'Wisconsin warranty deed form' and the malicious URL, suggesting a lure for phishing or malware. The presence of numerous PDF links, many hosted on Shopify, indicates a link farm designed to obscure the malicious destination.

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.cc/pify?keyword=wisconsin+warranty+deed+form
    • http://files.adamsmetaldetectorsuk.com/uploads/1/3/1/8/131856539/paxiwesezopip.pdf
    • http://files.onlineradioschool.com/uploads/1/3/2/6/132682974/1070f3a793.pdf
    • https://cdn.shopify.com/s/files/1/0428/4301/3287/files/92289883984.pdf
    • https://cdn.shopify.com/s/files/1/0433/7342/8890/files/xujivumobokitadipobogu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4141/4552/files/blending_words_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0433/9525/2374/files/13375277719.pdf
    • https://cdn.shopify.com/s/files/1/0434/4836/9319/files/82702779768.pdf
    • https://cdn.shopify.com/s/files/1/0431/6191/1458/files/calorie_counter_chart.pdf
    • https://cdn.shopify.com/s/files/1/0431/7518/2485/files/bijavakulu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1715/0368/files/84708610822.pdf
    • https://cdn.shopify.com/s/files/1/0430/1206/3391/files/97173489606.pdf
    • https://cdn.shopify.com/s/files/1/0428/8099/1395/files/grammar_worksheets_for_5th_graders.pdf
    • https://cdn.shopify.com/s/files/1/0433/7870/4549/files/surah_waqiah_al_kalam.pdf
    • https://cdn.shopify.com/s/files/1/0432/5959/2859/files/63950242081.pdf
    • https://cdn.shopify.com/s/files/1/0433/9240/1573/files/96408859821.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_off00005ee2.bin
70481e33eab46a13e7342d85645f8946d4a99730ea01ec37bc83b0087ec6676f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EE2 5340 bytes
font_01_sfnt_off00007106.bin
1e94b996ff1a03efddbbe9ea155311fafdc431916d16bf1b37c2689f70ecbb3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7106 10228 bytes

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