Malicious PDF — malware analysis report

Static analysis result for SHA-256 378ab66fafe0d963…

MALICIOUS

PDF

62.9 KB Created: 2020-08-16 00:51:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3df9eef7400cc9bb02e277c7273be221 SHA-1: 8127e11a2809e164f8f2b4f0de95f4e7cc0eca7f SHA-256: 378ab66fafe0d963144c4bbc9353beaa6e57048ba96034e15962ea774f9e9b38
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=bimanual+palpation+of+bladder'. Additionally, it exhibits a PDF link farm behavior with numerous external links, many of which are hosted on Shopify. The document body, though heavily obfuscated, contains the same URL, suggesting the primary intent is to redirect users 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.cc/pify?keyword=bimanual+palpation+of+bladder
    • http://remilax.serenitybirth.com/uploads/1/3/1/4/131407283/tagitatoberuw.pdf
    • http://files.medwaybaptist.org/uploads/1/3/1/1/131164118/6463547.pdf
    • http://files.audiocognoscenti.com/uploads/1/3/2/7/132740547/4534660.pdf
    • http://files.slfexhibition.com/uploads/1/3/2/6/132696512/4f492be8c.pdf
    • http://dirijutu.littlelemonmarketing.com/uploads/1/3/0/8/130815097/gusetuvisix.pdf
    • https://cdn.shopify.com/s/files/1/0437/0874/3835/files/ccna_cyber_ops_book.pdf
    • https://cdn.shopify.com/s/files/1/0434/5731/4977/files/79148126508.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/7485095273.pdf
    • https://cdn.shopify.com/s/files/1/0448/0447/2992/files/6482525400.pdf
    • https://cdn.shopify.com/s/files/1/0435/4641/1160/files/wifi_showing_authentication_problem_in_android.pdf
    • https://cdn.shopify.com/s/files/1/0430/8316/9943/files/numerologia_cabalistica_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0433/7103/6822/files/29370777931.pdf
    • https://cdn.shopify.com/s/files/1/0447/8894/0961/files/lugup.pdf
    • https://cdn.shopify.com/s/files/1/0434/2143/4005/files/boost_your_vocabulary_2_chomikuj.pdf
    • https://cdn.shopify.com/s/files/1/0436/0945/6803/files/70647253811.pdf
    • https://cdn.shopify.com/s/files/1/0427/4244/8295/files/3302338162.pdf
    • https://cdn.shopify.com/s/files/1/0431/5168/7837/files/depibisesujam.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_off0000b954.bin
7f42cb9bbe8a80080f4bb7d28de42325d2fb5038114f11db3b06e2961f557f2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB954 5200 bytes
font_01_sfnt_off0000cad9.bin
d988a9acf6090e615497f9d7000b7cba69eba00543d028d04a9150e35657dc36		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCAD9 10420 bytes

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