Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5b18f18a38d3273…

MALICIOUS

PDF

47.3 KB Created: 2020-08-14 09:55:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2bddc9721f536d8f0654547c39427505 SHA-1: c72d16d489c4e905d459e5a5d8af3a6045f089d3 SHA-256: b5b18f18a38d3273b57c2e1dfc563e6962d1dcdc3db5c9b8e8058cc0f26f55a3
130 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, many hosted on cdn.shopify.com. The document body contains a call-to-action phrase, suggesting a lure to click the embedded malicious link. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or phishing pages.

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.com/pify?keyword=free+first+birthday+chalkboard+template
    • http://xatanojo.chuckferrissports.com/uploads/1/3/1/3/131383483/lubezaxata_kuwowopowodur.pdf
    • http://gulurawe.thevikingtrubie.com/uploads/1/3/1/4/131411688/13d8bea44793.pdf
    • http://files.idslsuppliesltd.com/uploads/1/3/1/4/131453989/246fcd3ff.pdf
    • https://cdn.shopify.com/s/files/1/0433/3427/1126/files/litogizadibag.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6849/files/59149402342.pdf
    • https://cdn.shopify.com/s/files/1/0435/5362/0136/files/gurps_bestiary.pdf
    • https://cdn.shopify.com/s/files/1/0432/3993/2064/files/best_tamil_comedy_movies.pdf
    • https://cdn.shopify.com/s/files/1/0439/6518/6206/files/upload_repository_to_github.pdf
    • https://cdn.shopify.com/s/files/1/0429/9866/1279/files/46745502043.pdf
    • https://cdn.shopify.com/s/files/1/0444/6296/4903/files/kinizovad.pdf
    • https://cdn.shopify.com/s/files/1/0436/1653/4690/files/biochemistry_books_for_bsc.pdf
    • https://cdn.shopify.com/s/files/1/0428/8777/4374/files/kamojumuzeju.pdf
    • https://cdn.shopify.com/s/files/1/0431/0974/4789/files/9161427214.pdf
    • https://cdn.shopify.com/s/files/1/0434/0128/1701/files/68935796616.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tugomedimugatusigoxafif.pdf
    • https://cdn.shopify.com/s/files/1/0431/9671/1069/files/dinisizorufatotaj.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cb5.bin
6370cd0e3cf23b9b4ff3bcc109b51590d1862f59c62d93c9ced02a1d429cf9a8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CB5 5340 bytes
font_01_sfnt_off00007ed7.bin
b3b92851b362b6c80a6ed79d052886f5cf3b006be5201069bcde0495821887c8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7ED7 10232 bytes
font_02_sfnt_off0000a1ea.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xA1EA 4324 bytes