Malicious PDF — malware analysis report

Static analysis result for SHA-256 3090c37fd5309f46…

MALICIOUS

PDF

42.4 KB Created: 2020-08-10 06:15:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ffa82517555d4d3982db5e8492a96da0 SHA-1: bd1cb567a3bbeba5b106a4d760f961b733bd1a6a SHA-256: 3090c37fd5309f468f342c0fea4b1e1fb9df22bec850e0a0ddc9b9dfecc8addb
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the redirector heuristic. This suggests the PDF is designed to trick users into visiting malicious infrastructure, likely for further exploitation or credential harvesting.

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=wild+animals+pictures+with+names+pdf
    • http://files.newlightfotodesign.com/uploads/1/3/2/6/132681307/jozewu_vodagol_nudabunofivaru_besorakefobixaj.pdf
    • http://files.thesolidrockshop.com/uploads/1/3/0/8/130813797/zaxisufibuxuxigusi.pdf
    • http://files.positiveposturenz.com/uploads/1/3/1/4/131483550/sivaf_polatafi_zuwovil.pdf
    • http://files.newbusinessaccounting.co.uk/uploads/1/3/1/4/131437380/tevaperubapub.pdf
    • https://cdn.shopify.com/s/files/1/0434/6911/1461/files/sagem.pdf
    • https://cdn.shopify.com/s/files/1/0437/4839/3112/files/bioinformatics_algorithms_an_active_learning_approach_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dipudakafadaned.pdf
    • https://cdn.shopify.com/s/files/1/0427/4677/3660/files/pevoxatidorusamigema.pdf
    • https://cdn.shopify.com/s/files/1/0432/8256/3232/files/nivelasakaduwuw.pdf
    • https://cdn.shopify.com/s/files/1/0434/2949/4936/files/download_buku_akuntansi_manajemen_rudianto.pdf
    • https://cdn.shopify.com/s/files/1/0429/4790/3654/files/besselian_elements.pdf
    • https://cdn.shopify.com/s/files/1/0432/7941/7504/files/mokexezurunejurimejabi.pdf
    • https://cdn.shopify.com/s/files/1/0445/4852/2143/files/13666743405.pdf
    • https://cdn.shopify.com/s/files/1/0431/4172/6370/files/xisoputitajizoz.pdf
    • https://cdn.shopify.com/s/files/1/0430/0242/9593/files/fomamazujijuled.pdf
    • https://cdn.shopify.com/s/files/1/0431/8360/3876/files/2599954312.pdf
    • https://cdn.shopify.com/s/files/1/0435/5276/8151/files/5108887867.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_off00006705.bin
d8817a88da9af74d10ea54b300e6f19d738cc5196dcf8f6c10c9a3b84394c4cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6705 5500 bytes
font_01_sfnt_off000079ac.bin
da132abb4d1d1118c5ad2cc3f104bd57eb905171b90df6bcd6250f2b9717fa76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79AC 10288 bytes

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