Malicious PDF — malware analysis report

Static analysis result for SHA-256 474003b1357d5752…

MALICIOUS

PDF

55.1 KB Created: 2020-08-09 17:28:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00fefdd8e61efed667c78f9ccb65924d SHA-1: e46b9c6b2cae2fb78503e591bb67256053f02cec SHA-256: 474003b1357d5752d4d1a4f1c72ac78f2dcfd2baa7af8d9d8e3aad914605b48b
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the one identified by the heuristic. This suggests the primary goal is to redirect the user to malicious content, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=research+paper+on+behavioral+finance+pdf
    • http://files.bethckincaid.com/uploads/1/3/1/4/131407164/vimamokab.pdf
    • http://files.sizzlesnapproductions.com/uploads/1/3/2/8/132814439/9209278.pdf
    • http://files.pdsummit.ca/uploads/1/3/1/3/131381799/f2cae27b2aad.pdf
    • https://cdn.shopify.com/s/files/1/0429/3902/3526/files/55974551668.pdf
    • https://cdn.shopify.com/s/files/1/0435/3123/9588/files/97069617706.pdf
    • https://cdn.shopify.com/s/files/1/0430/8749/5321/files/kokakixomelajemalib.pdf
    • https://cdn.shopify.com/s/files/1/0427/5775/0951/files/23239348352.pdf
    • https://cdn.shopify.com/s/files/1/0428/4828/8935/files/47787769678.pdf
    • https://cdn.shopify.com/s/files/1/0430/9087/0423/files/47155036653.pdf
    • https://cdn.shopify.com/s/files/1/0432/0316/6369/files/51519214784.pdf
    • https://cdn.shopify.com/s/files/1/0427/4513/5260/files/63099688983.pdf
    • https://cdn.shopify.com/s/files/1/0432/8800/2710/files/tajagugerinaxe.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/jedizad.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9483/files/texuzerigejejosopuru.pdf
    • https://cdn.shopify.com/s/files/1/0432/5123/7022/files/kogalut.pdf
    • https://cdn.shopify.com/s/files/1/0433/6756/3429/files/20671968180.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_off0000989f.bin
6b2bf9b95b9622b6058c03fc6da213bf72e30e6b80e4c9e8ed8f74f2f87091f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x989F 5448 bytes
font_01_sfnt_off0000ab28.bin
35e76000720dcfea22422843e369c6a2adf57aec8ec91afbe4340863b159a9d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB28 10500 bytes

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