Malicious PDF — malware analysis report

Static analysis result for SHA-256 e93d7af613958a36…

MALICIOUS

PDF

42.4 KB Created: 2020-08-01 23:40:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5daad028ecaf33d194c66b15524c75d8 SHA-1: 6dfec3e482da70c471b56d804cd758e6dec15286 SHA-256: e93d7af613958a36743395354dc80a65f587b76513f4007875615b9a5895d3eb
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=harry+potter+subtitles'. This URL is presented within the document body, disguised as a lure for 'Harry Potter subtitles'. The PDF also exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify domains, likely for SEO manipulation or to obscure the malicious redirector. The primary malicious IOC is the redirector URL.

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/pify?keyword=harry+potter+subtitles
    • http://files.dodlestonparishcouncil.co.uk/uploads/1/3/1/4/131436978/497399.pdf
    • http://files.sjmediation.co.uk/uploads/1/3/1/4/131437750/2681396.pdf
    • http://files.asmorangecoast.com/uploads/1/3/1/4/131407096/vujepagise.pdf
    • http://files.jossavate.com/uploads/1/3/0/8/130874359/toruzolutetefexowaw.pdf
    • http://files.mysuzannahsmith.com/uploads/1/3/0/9/130968906/wulaxemotozevim-konefava-wofujelebafoj-sudiwimezar.pdf
    • https://cdn.shopify.com/s/files/1/0437/3420/4568/files/fituzafiraduketonikop.pdf
    • https://cdn.shopify.com/s/files/1/0432/1335/7214/files/diniwuworisakumox.pdf
    • https://cdn.shopify.com/s/files/1/0440/6401/4501/files/sinorol.pdf
    • https://cdn.shopify.com/s/files/1/0431/7049/6672/files/13630290840.pdf
    • https://cdn.shopify.com/s/files/1/0435/2560/3488/files/vijusut.pdf
    • https://cdn.shopify.com/s/files/1/0427/8901/1612/files/nuwiz.pdf
    • https://cdn.shopify.com/s/files/1/0432/1751/8751/files/77773014309.pdf
    • https://cdn.shopify.com/s/files/1/0429/4282/4611/files/87485929956.pdf
    • https://cdn.shopify.com/s/files/1/0439/0453/2648/files/77710446378.pdf
    • https://cdn.shopify.com/s/files/1/0428/0044/7655/files/25286675496.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_off000069af.bin
3070ca3b77d5c733325471a38b0a93be1252b5e2d151a41be9578bbaacd27902		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69AF 5016 bytes
font_01_sfnt_off00007ad0.bin
25e22c384a04ab60f8acceab984e991a04248ad1d737e7cd7ea30240b6ca98ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD0 10100 bytes

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