Malicious PDF — malware analysis report

Static analysis result for SHA-256 54900132f39108d2…

MALICIOUS

PDF

46.4 KB Created: 2020-08-19 15:38:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f4de28808f775e059e551d24cf501629 SHA-1: 1d48f961c4d488e8ad9f98161e0e89f10ba670d0 SHA-256: 54900132f39108d2112af86164667bcb772e4b2f6fc2f170d07487468ac5c19d
128 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, which is further supported by the presence of a link farm heuristic. The document body, though partially corrupted, contains text related to 'key account manager resume templates' and a URL that appears to be a lure. The primary malicious URL identified is https://ttraff.cc/pify?keyword=key+account+manager+resume+templates, which redirects to other potentially malicious or benign PDF files. The presence of numerous embedded links suggests an attempt to distribute malicious content or engage in SEO poisoning.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/pify?keyword=key+account+manager+resume+templates
    • http://files.hunterandersonrichmond.com/uploads/1/3/1/1/131164174/nepunogefose.pdf
    • http://files.nettiesuze.com/uploads/1/3/2/6/132681757/5149106.pdf
    • http://zawaveriw.bankruptcyattorney.amoriandassociates.com/uploads/1/3/0/8/130814921/677c679e.pdf
    • https://cdn.shopify.com/s/files/1/0440/1335/5166/files/84155853803.pdf
    • https://cdn.shopify.com/s/files/1/0428/9809/6284/files/livro_alter_ego_1.pdf
    • https://cdn.shopify.com/s/files/1/0428/3141/3404/files/wurudilik.pdf
    • https://cdn.shopify.com/s/files/1/0433/2870/0571/files/vitazo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kamunikizesow.pdf
    • https://cdn.shopify.com/s/files/1/0430/6593/3973/files/xatif.pdf
    • https://cdn.shopify.com/s/files/1/0437/6962/6781/files/tamixoluremejejelaxo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9058/3464/files/dl_44.pdf
    • https://cdn.shopify.com/s/files/1/0435/8176/7848/files/86537838844.pdf
    • https://cdn.shopify.com/s/files/1/0437/2971/5354/files/national_geographic_almanac_2020_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/3663/9395/files/20544953909.pdf
    • https://cdn.shopify.com/s/files/1/0432/6857/1298/files/allophylus_edulis.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_off000074fb.bin
fc125d82632dffa78e6e1d073edbf31dc66bb1cbfbb97c53d95a941708323976
pdf-font-stream PDF embedded font (sfnt) at offset 0x74FB 5324 bytes
font_01_sfnt_off0000870e.bin
45aee9840cc51445d2cff7f375ccbb258c16a51f13358ed463543243096f388b
pdf-font-stream PDF embedded font (sfnt) at offset 0x870E 10944 bytes