Malicious PDF — malware analysis report

Static analysis result for SHA-256 faee14df9314fe40…

MALICIOUS

PDF

42.7 KB Created: 2020-08-05 10:54:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b019ae9a84017b1e8a90f35a06f58eee SHA-1: f942e4a91025e664e2376d72709b3cbc75fa0d86 SHA-256: faee14df9314fe40a0d32a8639e3e760c7bd35182d337f29040e34c01b65679b
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for malicious redirector links and a link farm. The primary malicious URL, https://ttraff.ru/wb?keyword=bukti%20potong%20pph%20pasal%204%20ayat%202%20pdf, is a known malicious redirector. The document body contains garbled text but includes the same URL, suggesting it's the intended lure. The presence of numerous links to Shopify domains, some confirmed benign and others unknown, indicates a strategy to obscure the malicious destination through a large number of outbound links.

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/wb?keyword=bukti%20potong%20pph%20pasal%204%20ayat%202%20pdf
    • http://files.tualatindar.org/uploads/1/3/1/4/131406498/sonolale_mowoka_pulipi_lowolasiwevizup.pdf
    • http://files.greatchishillpc.com/uploads/1/3/1/4/131453512/82cf728241bfcc8.pdf
    • http://files.capoeiranottingham.co.uk/uploads/1/3/1/8/131871692/luzamapel.pdf
    • http://files.issaquahteencafe.org/uploads/1/3/1/4/131408169/wobalezibexujafe.pdf
    • https://cdn.shopify.com/s/files/1/0437/1090/6520/files/18358784256.pdf
    • https://cdn.shopify.com/s/files/1/0430/7730/4484/files/fedalo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9570/4227/files/11327145207.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32343356061.pdf
    • https://cdn.shopify.com/s/files/1/0429/3459/9843/files/material_ui_navbar.pdf
    • https://cdn.shopify.com/s/files/1/0435/8314/4093/files/58738043842.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mofofuledezenededur.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4967/files/28921891094.pdf
    • https://cdn.shopify.com/s/files/1/0430/2356/4957/files/26715703784.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_off00006891.bin
55ff74ae0b1af3127f5e41b5d3377bc9b7359e1387e9f580e61912d8aafd0f51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6891 5644 bytes
font_01_sfnt_off00007bea.bin
f14d2635969fa93975a65110746d1d86db4fcff21c4265f45be530d50db1a7e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BEA 9976 bytes

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