Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c2538de12d269f8…

MALICIOUS

PDF

37.2 KB Created: 2020-07-20 20:51:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76adeaec707f68a6a2d2fd2dd8716eb4 SHA-1: 78fd25a19772b4423ab76b8612d253ec6fb1dc10 SHA-256: 1c2538de12d269f8482b121e076c616c83bf3b1950b694b600b8b9d2168677fa
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wb?keyword=superhero%20outline%20template%20pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The file also exhibits characteristics of a link farm, with numerous embedded URLs, suggesting an attempt to manipulate search engine results or distribute content across multiple domains. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the exact lure.

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.cc/wb?keyword=superhero%20outline%20template%20pdf
    • http://files.theriftny.com/uploads/1/3/1/3/131384492/junogaxal-duxajokibusaso-fakinubi-bazefelap.pdf
    • http://files.losangelesaazk.org/uploads/1/3/2/7/132740756/bezexuzaw.pdf
    • http://files.naturallysport.net/uploads/1/3/1/4/131410479/muziwazavifobeb.pdf
    • http://files.brianelassiter.com/uploads/1/3/1/4/131483279/kiromogiv.pdf
    • http://files.missrodeowashingtoninc.com/uploads/1/3/0/7/130776399/weziluvoxoda.pdf
    • http://files.missrodeowashingtoninc.com/uploads/1
    • https://cdn.shopify.com/s/files/1/0432/5477/5970/files/43066648994.pdf
    • https://cdn.shopify.com/s/files/1/0432/3105/1931/files/ruzaluletubegidum.pdf
    • https://cdn.shopify.com/s/files/1/0436/3078/8758/files/19403888122.pdf
    • https://lovosofu483699639.files.wordpress.com/2020/07/68383271975.pdf
    • https://vadirukirog.files.wordpress.com/2020/07/36477045840.pdf
    • https://takipeximon.files.wordpress.com/2020/07/1897962400.pdf
    • https://cdn.shopify.com/s/files/1/0432/3311/6315/files/dafad.pdf
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/98964192023.pdf
    • https://cdn.shopify.com/s/files/1/0429/2971/7407/files/nabelop.pdf
    • https://cdn.shopify.com/s/files/1/0431/6217/3604/files/xodomuwusixol.pdf
    • https://cdn.shopify.com/s/files/1/0431/2131/1898/files/91795199406.pdf
    • https://cdn.shopify.com/s/files/1/0432/8852/7013/files/83976063474.pdf
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/jipafafixulugona.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72163988246.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_off000056b5.bin
b7ceea319e9455f8b8142b0085b818d386b692fd62c06ec76a96c22cd929206e
pdf-font-stream PDF embedded font (sfnt) at offset 0x56B5 5088 bytes
font_01_sfnt_off000067c8.bin
840325a138a53698dd740fb23359b0c8be16fe72c37ab8338a0aa994b66a44c9
pdf-font-stream PDF embedded font (sfnt) at offset 0x67C8 9252 bytes