Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e19e77dd6f742d5…

MALICIOUS

PDF

43.3 KB Created: 2020-08-03 04:20:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d0984b158556f27372f718fcc6834be SHA-1: 08a360ef7ed5e31d03c545ee8c910ae724950eef SHA-256: 4e19e77dd6f742d55e78b3ff7c99c86b78402c55f4b0c95415a17b54ed0f7389
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic identifying it as a PDF SEO link farm. One of these links, 'https://ttraff.com/pify?keyword=deaf+like+me', is flagged as a malicious redirector. The document body is heavily obfuscated, but the presence of the malicious redirector URL suggests an attempt to lure users to malicious content.

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=deaf+like+me
    • http://files.lavendersweeprecords.com/uploads/1/3/1/1/131163492/0af22b54.pdf
    • http://files.glenridgetkd.com/uploads/1/3/1/3/131384401/8190971.pdf
    • http://files.brickbybrickfitness.com/uploads/1/3/2/6/132695325/gexarujaduvizemeni.pdf
    • https://cdn.shopify.com/s/files/1/0431/2937/2832/files/kofowazivunobixuzezosu.pdf
    • https://cdn.shopify.com/s/files/1/0435/0106/0262/files/nulurolajitujigikoner.pdf
    • https://cdn.shopify.com/s/files/1/0440/8344/5925/files/67743323652.pdf
    • https://cdn.shopify.com/s/files/1/0428/8672/5799/files/install_node_with_nvm.pdf
    • https://cdn.shopify.com/s/files/1/0434/7576/3353/files/diablo_2_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/numpy_matrix_transpose.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/pilumumuwinuvonaru.pdf
    • https://cdn.shopify.com/s/files/1/0435/0276/4184/files/nitenune.pdf
    • https://cdn.shopify.com/s/files/1/0430/1019/5605/files/mimopedokamakex.pdf
    • https://cdn.shopify.com/s/files/1/0438/8444/5864/files/muzaruduguxepetokonaruj.pdf
    • https://cdn.shopify.com/s/files/1/0432/0080/7070/files/takujugilolisavozarami.pdf
    • https://cdn.shopify.com/s/files/1/0428/0107/0247/files/foxojewenozub.pdf
    • https://cdn.shopify.com/s/files/1/0427/5198/3783/files/13234920006.pdf
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/75606882553.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/8000313493.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_off00006e12.bin
5f51a7b5d498761b05dfcaa669447bf2dec4408183a730462ee44a59430a4e10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E12 4700 bytes
font_01_sfnt_off00007e0f.bin
1f42f230ff6bf5aafeede37ea56238bf99fd830b38f4d2c3041dec4569b0119a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E0F 9980 bytes

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