Malicious PDF — malware analysis report

Static analysis result for SHA-256 28f88705b41af6fc…

MALICIOUS

PDF

47.0 KB Created: 2020-08-31 03:00:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: df3bb095342a10792ae7845e26670cc1 SHA-1: f237af8597c59bc07f6c2081838fada934c78053 SHA-256: 28f88705b41af6fcb05bd12cc9fd07e7f788aceb417aeec61845714048eab6a1
142 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, including a critical link to a known malicious redirector at 'https://ttraff.club/wix?keyword=ruler+measurements+inches+actual+size'. The document body, though heavily obfuscated, appears to contain text related to ruler measurements and includes this malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of a QR code lure heuristic further supports a phishing pretext. No scripts were extracted from this sample.

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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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=ruler+measurements+inches+actual+size
    • https://cdn.shopify.com/s/files/1/0433/9249/9877/files/mopesotegoka.pdf
    • https://cdn.shopify.com/s/files/1/0433/6048/5534/files/94381456938.pdf
    • https://cdn.shopify.com/s/files/1/0437/1791/8870/files/36085920642.pdf
    • https://cdn.shopify.com/s/files/1/0430/2195/9325/files/soruxodanokagele.pdf
    • https://cdn.shopify.com/s/files/1/0451/5836/7386/files/vubopozi.pdf
    • https://static.usrfiles.com/ugd/7d1dc9_d3e8689e36a5463b92aa329a33db936d.pdf
    • https://static.usrfiles.com/ugd/b8c837_a79fbc4fff6349d8a55de628fba08f0e.pdf
    • https://static.usrfiles.com/ugd/0fdb6d_7ce83ee1e4a44cf7aca519f4aa900985.pdf
    • https://static.usrfiles.com/ugd/b8c837_9220537f8c364af78591351a6a777901.pdf
    • https://static.usrfiles.com/ugd/45e30f_52da16be8c4546a0b66f10fb6f3ef595.pdf
    • https://static.usrfiles.com/ugd/b8c837_9697dd7740e74475badebf05d2c73e82.pdf
    • https://static.usrfiles.com/ugd/b8c837_2826ded81f9641cfb74f3207228d1a8c.pdf
    • https://static.usrfiles.com/ugd/b8c837_00ffb52c5f584c2089c81e9d5165916e.pdf
    • https://static.usrfiles.com/ugd/b8c837_efd35249ba134561b3e8a6ddc2c84531.pdf
    • https://static.usrfiles.com/ugd/cb2bed_913917d8a65c4b8cace91c62a82be45a.pdf
    • https://static.usrfiles.com/ugd/e2c250_8db9e49fb79548818a65716dd06d0a01.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_off00006448.bin
2037bdd6a99de68e7f211ce6b38d141b07cd9f81f315fd4a8cc9a226faf36f1e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6448 5096 bytes
font_01_sfnt_off0000756d.bin
33d59490ca60eef139e94400f64c0db2c32d8e20a5f59776d4b0f7fe5cee42e0
pdf-font-stream PDF embedded font (sfnt) at offset 0x756D 10248 bytes
font_02_sfnt_off000098b4.bin
1e7a7ce4192d6d957d4ba8e301ef6c509a0133afe2fe87fb40f4f13f36c174cb
pdf-font-stream PDF embedded font (sfnt) at offset 0x98B4 16524 bytes