Malicious PDF — malware analysis report

Static analysis result for SHA-256 9de2b792fcdaf5bc…

MALICIOUS

PDF

44.0 KB Created: 2020-08-10 18:41:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d9b77db244f4bb9be2f491b38c1cddd6 SHA-1: dc270bb69f4eba319f85e7ef15d3276b50496be5 SHA-256: 9de2b792fcdaf5bca29909f3958dab2dec8cd448fdf339fbc4cbaa4959dc746c
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. This URL is presented as a download for 'important days in 2020 pdf download', and the document body contains a call-to-action phrase. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The primary malicious URL is https://ttraff.com/pify?keyword=important+days+in+2020+pdf+download, which likely serves as a lure to a malicious payload.

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=important+days+in+2020+pdf+download
    • http://files.msmaguire-mls.com/uploads/1/3/0/8/130874429/jemegixapu-robonabosogip-fisowuzezef-ditujakesidi.pdf
    • http://sulura.crfvirginia.com/uploads/1/3/2/6/132680813/6d3dd96d3c.pdf
    • http://files.idahobluegrassassociation.org/uploads/1/3/0/8/130874050/8422788.pdf
    • http://files.gatesandbridge.com/uploads/1/3/1/6/131607063/kusurawod.pdf
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/wowobogipusenuv.pdf
    • https://cdn.shopify.com/s/files/1/0432/2030/4034/files/71118634533.pdf
    • https://cdn.shopify.com/s/files/1/0428/7974/6201/files/fotozasuguf.pdf
    • https://cdn.shopify.com/s/files/1/0430/9961/9492/files/dafuxetowoluxabuk.pdf
    • https://cdn.shopify.com/s/files/1/0429/8443/9971/files/demelobu.pdf
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/telikakeriwavemowo.pdf
    • https://cdn.shopify.com/s/files/1/0436/0008/5160/files/7386458912.pdf
    • https://cdn.shopify.com/s/files/1/0431/0047/1456/files/12461465998.pdf
    • https://cdn.shopify.com/s/files/1/0431/9579/3571/files/mewuvizuduj.pdf
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/jakeduroki.pdf
    • https://cdn.shopify.com/s/files/1/0429/6274/7545/files/19072437544.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45292738862.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_off00006cb3.bin
62997bf10a870df30736bbd74baff27c0e7d4a97a810b73a85340082c81b04ec
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CB3 5592 bytes
font_01_sfnt_off00007fb7.bin
bf05fd5f218e37b9c1275e26a060f1b05d6d6bf3f8d0dffe656fa0c543236f05
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FB7 10428 bytes