Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2f0406654ae3cda…

MALICIOUS

PDF

72.1 KB Created: 2020-07-27 15:29:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c3bd8899c61d36961f93581e638a480 SHA-1: b0058d96b6d19e0ae8ce8eef846655bb99a6b5d8 SHA-256: e2f0406654ae3cda7dbb353c91391de95dc9071b64f7241fa0f537f3726225e8
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific redirector URL that is flagged as malicious. The document body, though heavily obfuscated, suggests a lure related to 'Bihar board class 11th admission form'. The primary attack pattern involves redirecting the user to malicious infrastructure via the embedded link, likely to host further malicious content or phishing pages.

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.ru/pify?keyword=bihar+board+class+11th+admission+form
    • http://files.beewedapp.com/uploads/1/3/1/0/131070602/palanedo-pidari-nusumexokatanev-nawepusowis.pdf
    • http://files.agrowingplace.ca/uploads/1/3/0/7/130738921/429740.pdf
    • http://files.vicksburgartassociation.org/uploads/1/3/2/6/132695586/resatajalasujupebo.pdf
    • http://files.sidemountainspecialtyfoods.com/uploads/1/3/1/0/131069819/guzef.pdf
    • http://files.sidemountainspecialtyfoods.com/
    • https://cdn.shopify.com/s/files/1/0433/0799/1208/files/525616255.pdf
    • https://cdn.shopify.com/s/files/1/0431/1983/7345/files/81048827674.pdf
    • https://cdn.shopify.com/s/files/1/0430/1943/6185/files/96860702929.pdf
    • https://cdn.shopify.com/s/files/1/0431/5322/7936/files/mawujuba.pdf
    • https://cdn.shopify.com/s/files/1/0429/8709/4177/files/nogupud.pdf
    • https://cdn.shopify.com/s/files/1/0434/4443/7142/files/getovogowosepulakijibena.pdf
    • https://cdn.shopify.com/s/files/1/0428/1411/1903/files/5885209466.pdf
    • https://cdn.shopify.com/s/files/1/0430/2422/0321/files/83896590349.pdf
    • https://cdn.shopify.com/s/files/1/0427/9851/4343/files/3627210069.pdf
    • https://cdn.shopify.com/s/files/1/0430/7949/9940/files/dofasidepelif.pdf
    • https://cdn.shopify.com/s/files/1/0433/3705/6414/files/podenid.pdf
    • https://cdn.shopify.com/s/files/1/0430/2811/9706/files/kozunipufuxovojutekebuxa.pdf
    • https://cdn.shopify.com/s/files/1/0430/4646/9793/files/49132558061.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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000894c.bin
3649947cfd6de36434f5f6446e27a35f452e290386c224adbea6802a87a97efc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x894C 5172 bytes
font_01_sfnt_off00009aaa.bin
b91f3c26f37c28538ed09035cbea6f9221827f1e30b50c452f08cc820bcc167b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AAA 3720 bytes
font_02_sfnt_off0000a605.bin
ba3d498fb0265f06a5e059d6578b2446085df1d7fc6bf2db694160321929a8d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA605 5684 bytes
font_03_sfnt_off0000b5a7.bin
1c6b880ec51d5f9ff4b9462b7c3c2e5004500641ef63252c6caec421de6dd061		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB5A7 10272 bytes
font_04_sfnt_off0000d8f1.bin
57985312c2126316f317fe38bbbe12f17fafe175f2604ad106bdde9bcb1784c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD8F1 16696 bytes
font_05_sfnt_off0000f05e.bin
84d15b92e58b4eaa6cec523434250d0e17dbd9e30bd1b5ba48c83f414d44e964		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF05E 10484 bytes

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