Malicious PDF — malware analysis report

Static analysis result for SHA-256 406a3cdf7f76d28d…

MALICIOUS

PDF

46.3 KB Created: 2020-09-07 09:05:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49369a8a5fb325071320ed0f243f7c13 SHA-1: 54290873311f4c595e0be62a7eb98c1ab61f76cb SHA-256: 406a3cdf7f76d28d7eb459214505afb6d1420eccb5698d523b50a5af2f3f70d6
160 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to a known malicious URL. Additionally, the SE_BROWSER_INSTALL_LURE heuristic suggests a social engineering tactic to trick users into installing something. The document body contains the URL https://ttraff.club/wix?keyword=3+molecules+and+compounds+worksheet+answers, which is likely the malicious redirector. The overall pattern suggests a phishing or malware delivery attempt.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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.club/wix?keyword=3+molecules+and+compounds+worksheet+answers
    • https://cdn.shopify.com/s/files/1/0430/4837/0333/files/22767753253.pdf
    • https://cdn.shopify.com/s/files/1/0432/8924/7894/files/68587145551.pdf
    • https://cdn.shopify.com/s/files/1/0433/6130/4744/files/romakibojorebegexetimelus.pdf
    • https://static.usrfiles.com/ugd/93c935_b229bfa32e184052bd25d906f2abd245.pdf
    • https://static.usrfiles.com/ugd/575fb0_245fb03d53f84895aa8ef96ded78fac0.pdf
    • https://static.usrfiles.com/ugd/b8c837_e9d5730f48464529ad166e3f86affca9.pdf
    • https://static.usrfiles.com/ugd/b8c837_8e771c18a6e3438b96fec88c96e6e649.pdf
    • https://cdn.shopify.com/s/files/1/0429/5698/0377/files/41781437365.pdf
    • https://cdn.shopify.com/s/files/1/0433/0084/7781/files/batob.pdf
    • https://cdn.shopify.com/s/files/1/0432/7977/7945/files/salem_season_2_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/36103472339.pdf
    • https://static.usrfiles.com/ugd/c836c3_16979979b5e44dacb900aedf77e8da04.pdf
    • https://static.usrfiles.com/ugd/3fb742_ca44dec171fe4f6c93191fa2ed077e04.pdf
    • https://static.usrfiles.com/ugd/ae15ca_61c72c33c4bc4a66b7a22c6be706a843.pdf
    • https://static.usrfiles.com/ugd/32acb1_74e862b764734a71b3c3235673fde827.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_off000068b0.bin
03f97b8ef94f08307f70c489bc8a0fc728e3f45552fff148d8a86451094c7af8
pdf-font-stream PDF embedded font (sfnt) at offset 0x68B0 5372 bytes
font_01_sfnt_off00007acb.bin
35c104f99bc22179f30387d051051b2814ab8ebfe55f7bcb2530a7a5695d8992
pdf-font-stream PDF embedded font (sfnt) at offset 0x7ACB 10248 bytes
font_02_sfnt_off00009d9e.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230
pdf-font-stream PDF embedded font (sfnt) at offset 0x9D9E 4324 bytes