Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1c6d2e4b6440e92…

MALICIOUS

PDF

40.0 KB Created: 2020-09-05 14:38:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03f2aa0d2707a6ce8dfb00d9fba3a4c4 SHA-1: dad0c0dc705d340f397a12b1820efff4ec2171c3 SHA-256: e1c6d2e4b6440e92a00b2957ce4c54a8b741a24af2ff72f86cc7198a83527bf4
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a critical heuristic indicating it links to known malicious redirector infrastructure, specifically `https://ttraff.me/wix?keyword=babylon+translator++mac`. It also features a link farm pointing to numerous PDFs hosted on Shopify, with one such link being `https://cdn.shopify.com/s/files/1/0432/5608/6696/files/85498504021.pdf`. The presence of a 'download button' lure and a 'password-protected archive' lure suggests a social engineering tactic to trick the user into clicking the malicious link. The document body, though heavily obfuscated, contains the same URLs, reinforcing the malicious intent.

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.me/wix?keyword=babylon+translator++mac
    • https://cdn.shopify.com/s/files/1/0432/5608/6696/files/85498504021.pdf
    • https://cdn.shopify.com/s/files/1/0437/4013/5575/files/85847253610.pdf
    • https://cdn.shopify.com/s/files/1/0433/9597/3276/files/strengthsfinder_free_test.pdf
    • https://cdn.shopify.com/s/files/1/0435/5905/9615/files/dogobadijugezefuxorokazo.pdf
    • https://static.usrfiles.com/ugd/e78b77_57c92e9a133548418ab6e505a0276733.pdf
    • https://static.usrfiles.com/ugd/9734e7_5bc26d2d4a3a4c9280e0fb06935733fd.pdf
    • https://static.usrfiles.com/ugd/9e53d4_6b957db06cfc470db757811f6c4bacc9.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gejazopemovaro.pdf
    • https://cdn.shopify.com/s/files/1/0437/1929/5130/files/the_doubling_rule_spelling_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0440/9812/5976/files/73559060693.pdf
    • https://cdn.shopify.com/s/files/1/0437/0821/9560/files/saxebexakokeda.pdf
    • https://cdn.shopify.com/s/files/1/0460/3871/2479/files/46678486009.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_off00005588.bin
e3c62a53f6f0414e0e6ebde2c57b82fa335b6c69bec4319018ea137975c34439
pdf-font-stream PDF embedded font (sfnt) at offset 0x5588 5236 bytes
font_01_sfnt_off0000673d.bin
e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
pdf-font-stream PDF embedded font (sfnt) at offset 0x673D 1800 bytes
font_02_sfnt_off00006fcb.bin
d4ff4101568d2ab3acc4052a4c18a339765f6b0fd565472bc1e509b966ecb43a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FCB 10324 bytes