Malicious PDF — malware analysis report

Static analysis result for SHA-256 547f883165ce1b00…

MALICIOUS

PDF

43.6 KB Created: 2020-07-09 05:10:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1c59188aa1fc7239633db890572a3b7a SHA-1: e0f565c77b01ce2f3c709d33d59d5c78ee81f559 SHA-256: 547f883165ce1b001bf92d7587958f1fb164a313fc141bcb487ff7feb3ffdced
128 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, with a critical heuristic identifying a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the redirector heuristic. The presence of a "download button" lure further suggests a malicious intent to trick the user into navigating these links. The primary attack pattern involves directing users to potentially harmful websites.

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.ru/wb?keyword=open%20wide%20book%20pdf
    • http://files.bhwhemptherapy.com/uploads/1/3/0/9/130969278/2eeb997ba.pdf
    • http://files.capetowndaytours.net/uploads/1/3/0/8/130874629/bugob-bowon-jozopo-vudux.pdf
    • http://files.episcopalmissioncenter.org/uploads/1/3/0/9/130969498/1ed0782251a23eb.pdf
    • http://files.laviishluxxe.com/uploads/1/3/0/7/130775942/1a41a3f.pdf
    • http://files.claytonsconstruction.com/uploads/1/3/1/6/131607889/xosizibaj.pdf
    • http://files.myfutra.com/uploads/1/3/1/3/131384018/netax.pdf
    • http://files.musingaboutwriting.com/uploads/1/3/0/9/130969498/zilijep-moxanokex-xopetiwute.pdf
    • http://files.thelambranch.com/uploads/1/3/0/7/130775368/sosozov.pdf
    • http://files.petoskeycenteriop.com/uploads/1/3/2/3/132302848/5228514.pdf
    • https://mojokego.files.wordpress.com/2020/06/21125039471.pdf
    • https://gubobag.files.wordpress.com/2020/06/fusarajezeb.pdf
    • https://fakemoj.files.wordpress.com/2020/06/jakevuwenodutusegaxi.pdf
    • https://vaxunijigi.files.wordpress.com/2020/07/38729831352.pdf
    • https://pesiloratepo.files.wordpress.com/2020/07/10643266887.pdf
    • https://movupasu.files.wordpress.com/2020/06/46782034706.pdf
    • https://zosexev.files.wordpress.com/2020/07/17844262503.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/50398535586.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ziwodukujaluladiludu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32829552166.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/41448402009.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/3789128943.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_off00006fb8.bin
dc7bfd6cdd3723ff7dbb127a5d9768191ddcb971bf48e74b8d8445a74a3d9d5f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FB8 4548 bytes
font_01_sfnt_off00007f44.bin
40406332305b2d7be9d965fa8439cccf5d85241075007639bdc9533e4b5e9c4f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F44 9964 bytes