Malicious PDF — malware analysis report

Static analysis result for SHA-256 b34a655c57c7b3b1…

MALICIOUS

PDF

79.6 KB Created: 2020-08-02 10:23:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 685e25be868e9577c9fc0c7adf1c8895 SHA-1: cd78bba1c5fc798b1233c9f2fb10bb3c733b20e1 SHA-256: b34a655c57c7b3b1c73b377c21ca4b15eb66bdd6462faf54e43b1c68c821a8bd
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a mass external link farm, with a critical heuristic identifying a malicious redirector. The primary malicious URL is 'https://ttraff.ru/pify?keyword=dental+school+personal+statement+examples+accepted'. This suggests the document's purpose is to redirect users to malicious infrastructure, likely for phishing or malware delivery. The document body contains garbled text but includes the target keyword 'dental school personal statement examples accepted', indicating a potential lure.

Heuristics 3

  • 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.
  • 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.ru/pify?keyword=dental+school+personal+statement+examples+accepted
    • http://files.orillialawnbowls.ca/uploads/1/3/1/4/131453674/82a535881.pdf
    • http://files.makingmathmiracles.com/uploads/1/3/2/7/132710627/jiwefeludujenan_pobabupesamaxi_lirep_mikixotazex.pdf
    • http://files.theyellowdoorstudio.com/uploads/1/3/1/1/131163599/0a018c95cf2320c.pdf
    • http://files.bartlettartdepartment.com/uploads/1/3/1/6/131636769/4410956.pdf
    • https://cdn.shopify.com/s/files/1/0430/1943/6195/files/15556064722.pdf
    • https://cdn.shopify.com/s/files/1/0428/1863/3894/files/46973207948.pdf
    • https://cdn.shopify.com/s/files/1/0431/0581/2633/files/merivonufotogilu.pdf
    • https://cdn.shopify.com/s/files/1/0429/0415/8364/files/abode_flash_11.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81256704061.pdf
    • https://cdn.shopify.com/s/files/1/0431/4529/8077/files/82066754312.pdf
    • https://cdn.shopify.com/s/files/1/0432/3213/3278/files/81353666821.pdf
    • https://cdn.shopify.com/s/files/1/0439/5424/1694/files/76459587277.pdf
    • https://cdn.shopify.com/s/files/1/0430/0718/0954/files/12070656299.pdf
    • https://cdn.shopify.com/s/files/1/0429/3882/6918/files/39351275114.pdf
    • https://cdn.shopify.com/s/files/1/0429/7208/6435/files/bixejotulizapoletuxej.pdf
    • https://cdn.shopify.com/s/files/1/0431/6335/3244/files/surf_report_destin.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_off0000f97f.bin
b36aaaaf1154a5b0267a5f00b02f18b73ca1ff3a428aa70aadd0368f028b265f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF97F 5380 bytes
font_01_sfnt_off00010ba7.bin
57a328a8b0980df3841449893e7d437693f5bfd7cc329f6fcdef107477755c55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10BA7 10980 bytes

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