Malicious PDF — malware analysis report

Static analysis result for SHA-256 54dfc82815d3fc23…

MALICIOUS

PDF

46.9 KB Created: 2020-08-10 10:29:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 630d1b18d9c44181da1a5e198f52aa54 SHA-1: 3d1c42c58327f94edc73012746c64023df9ce065 SHA-256: 54dfc82815d3fc23cf39a44ebd2b87d8a2a91fee539d11c147a9e2261f3ba6c7
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This indicates the document is designed to redirect users to malicious infrastructure. Additionally, a PDF SEO link farm heuristic was triggered, suggesting the document is part of a larger scheme to generate traffic or distribute malicious content through numerous links. The embedded URL in the document body, 'https://ttraff.com/pify?keyword=livro+cedulas+do+brasil+pdf', confirms the redirection attempt.

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=livro+cedulas+do+brasil+pdf
    • http://files.alrajabahrain.org/uploads/1/3/0/7/130775292/rilinejilibul.pdf
    • http://dezot.angelafiori.com/uploads/1/3/1/8/131871390/d5f36180.pdf
    • http://dojobin.roydesignedthat.com/uploads/1/3/0/8/130874085/woguwaweneli.pdf
    • http://romulus.etherealtoneworks.com/uploads/1/3/1/3/131380485/padukakaximaku.pdf
    • https://cdn.shopify.com/s/files/1/0432/0896/6301/files/california_mushrooms_the_comprehensive_identification_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66083684812.pdf
    • https://cdn.shopify.com/s/files/1/0452/1800/5143/files/aditya_hridaya_stotra_malayalam.pdf
    • https://cdn.shopify.com/s/files/1/0431/1715/0357/files/finizuzubokogujamite.pdf
    • https://cdn.shopify.com/s/files/1/0428/3367/4396/files/76482933942.pdf
    • https://cdn.shopify.com/s/files/1/0429/7415/0809/files/64957846533.pdf
    • https://cdn.shopify.com/s/files/1/0427/6974/4028/files/robasizazotabor.pdf
    • https://cdn.shopify.com/s/files/1/0428/4183/3635/files/37874501698.pdf
    • https://cdn.shopify.com/s/files/1/0434/1471/6572/files/jadual_pembayaran_gaji_2020.pdf
    • https://cdn.shopify.com/s/files/1/0441/1149/5320/files/ceptam_9_notification.pdf
    • https://cdn.shopify.com/s/files/1/0428/3406/7615/files/58185773881.pdf
    • https://cdn.shopify.com/s/files/1/0437/2532/4439/files/business_idea_proposal_sample.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80787326618.pdf
    • https://cdn.shopify.com/s/files/1/0435/0102/7493/files/8743482363.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_off00006aa2.bin
2de5d8e81fcbb82bd59e59ef3fd5a71cf6bc2fe1bc117ff36ed00b0d8c01dc4f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA2 5292 bytes
font_01_sfnt_off00007cb3.bin
2f3d66515e434b9ea0bf40a309de4bd067eff848e4cbcbf26bfc2c066c753fd9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB3 16864 bytes