Malicious PDF — malware analysis report

Static analysis result for SHA-256 36924e6b8ef600f8…

MALICIOUS

PDF

42.9 KB Created: 2020-08-07 22:20:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85f302f2916c48c0021fbb51fa3e6877 SHA-1: 016128eadd3cc40d4c18e266593674fa5b5a39fb SHA-256: 36924e6b8ef600f80a961f9a3cab992b7db2d6a6e2ebad0f6452ae64b647cf31
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'classification of anticancer drugs' and includes the malicious URL. This suggests a phishing or social engineering attack where the user is tricked into visiting a malicious site under the guise of accessing a legitimate document. No scripts were extracted, limiting the analysis of further payload delivery or persistence mechanisms.

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.com/pify?keyword=classification+of+anticancer+drugs+with+mechanism+of+action+pdf
    • http://files.captainsgalleyseafoodhickory.com/uploads/1/3/2/6/132695662/7814519.pdf
    • http://files.mdgracedesigns.com/uploads/1/3/0/7/130775025/lufotol.pdf
    • http://files.kimberleychiropractic.com/uploads/1/3/0/9/130969465/1249c57.pdf
    • http://files.rynsapics.com/uploads/1/3/0/8/130814104/9daa37f8c.pdf
    • http://files.americanuktaxsolutions.com/uploads/1/3/2/7/132741241/kukub.pdf
    • https://cdn.shopify.com/s/files/1/0433/9820/1502/files/55024851718.pdf
    • https://cdn.shopify.com/s/files/1/0431/7180/7391/files/riweninefesu.pdf
    • https://cdn.shopify.com/s/files/1/0429/3532/0742/files/pugig.pdf
    • https://cdn.shopify.com/s/files/1/0431/2317/9677/files/introduccion_al_budismo_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0440/1712/3486/files/focused_antenatal_care.pdf
    • https://cdn.shopify.com/s/files/1/0431/7731/2411/files/2650562056.pdf
    • https://cdn.shopify.com/s/files/1/0429/6366/5055/files/foxadoxirelelovuf.pdf
    • https://cdn.shopify.com/s/files/1/0433/2827/4585/files/pesolotefozuxufalupaxini.pdf
    • https://cdn.shopify.com/s/files/1/0432/3672/0798/files/27187883322.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/47404219406.pdf
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/rinufemidikipituwotawiwi.pdf
    • https://cdn.shopify.com/s/files/1/0436/8665/8213/files/89048020975.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/
    • https://cdn.shopify.com/s/files/1/0433/2827/4585/files/pesolotefozuxufalupaxini

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006872.bin
3cfdfde91bf032e522cadb15f86a0a22a8560646fe97121d83b8e94838785766
pdf-font-stream PDF embedded font (sfnt) at offset 0x6872 5564 bytes
font_01_sfnt_off00007b42.bin
a18508ad061037519679bbc1851ebd630309adf61f345b3117d5439a272d9a74
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B42 10032 bytes