Malicious PDF — malware analysis report

Static analysis result for SHA-256 d646abfec699ff9e…

MALICIOUS

PDF

50.0 KB Created: 2020-08-28 12:20:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 090139f8618df030012cee8150272bac SHA-1: 10a5df2d983e2d4e4e006ccbe9218c9dd5de6d29 SHA-256: d646abfec699ff9e1d7cb8ee4bbeb4a4c03ce92f56c910eb2d41731c554ce3d3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=esxi+web+client+url'. Additionally, it exhibits a PDF link farm heuristic, with many links pointing to Shopify-hosted PDFs. The document also contains a lure for remote support tools, suggesting a social engineering pretext. The embedded URL is the primary indicator of malicious intent, likely leading to a phishing or scam page.

Heuristics 4

  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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=esxi+web+client+url
    • http://files.celticknot1000.com/uploads/1/3/1/3/131380128/4848516.pdf
    • http://files.penngradconsulting.com/uploads/1/3/1/4/131438741/lamota.pdf
    • http://files.gelc2020.com/uploads/1/3/1/4/131483371/tezuxufut-rusuzusuge.pdf
    • http://rotoganot.radioeastmed.com/uploads/1/3/2/8/132814084/butosu_jumoniroso_vanokodapes.pdf
    • http://files.forouryouthfoundation.org/uploads/1/3/2/8/132815791/7997533.pdf
    • https://cdn.shopify.com/s/files/1/0429/7896/7703/files/mukimak.pdf
    • https://cdn.shopify.com/s/files/1/0438/4689/3730/files/58495076754.pdf
    • https://cdn.shopify.com/s/files/1/0439/5070/2750/files/apprendre_a_lire.pdf
    • https://cdn.shopify.com/s/files/1/0431/2399/8874/files/aromatic_and_antiaromatic_and_nonaromatic.pdf
    • https://cdn.shopify.com/s/files/1/0435/5863/3631/files/ladovojizagukaraserudo.pdf
    • https://cdn.shopify.com/s/files/1/0464/2511/2728/files/bolafebavefezud.pdf
    • https://cdn.shopify.com/s/files/1/0431/5866/7430/files/68278213618.pdf
    • https://cdn.shopify.com/s/files/1/0434/1481/4885/files/bourdieu_distinction.pdf
    • https://cdn.shopify.com/s/files/1/0432/3681/9104/files/assetto_corsa_database.pdf
    • https://cdn.shopify.com/s/files/1/0429/7195/5353/files/98114938076.pdf
    • https://cdn.shopify.com/s/files/1/0429/0550/1852/files/34497681855.pdf
    • https://cdn.shopify.com/s/files/1/0434/7107/7526/files/12302158916.pdf
    • https://cdn.shopify.com/s/files/1/0435/8085/0335/files/51567892340.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_off0000864d.bin
4d52a2bd5b5eda055c5e290183b4ec6fcf2868da499399465e8d52a08a78ee99
pdf-font-stream PDF embedded font (sfnt) at offset 0x864D 4840 bytes
font_01_sfnt_off000096e3.bin
3a2f05b8ffd0bdde8a97d48683545065f06fe33fbd2dcdf224e29ea8a3a3058b
pdf-font-stream PDF embedded font (sfnt) at offset 0x96E3 10520 bytes