Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9a384c0b57ecffd…

MALICIOUS

PDF

192.5 KB Created: 2020-08-15 22:10:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4087cd20d1d86b2a4e6f203072fa64ac SHA-1: 3b7da42c78b4dff438eebbb0ba1ef3d8ffc12832 SHA-256: a9a384c0b57ecffd7d693fa7154b0624732f8b3290ae8d60633bf54a797ff02f
100 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wb?keyword=cpwd%20works%20manual%202010%20pdf'. Additionally, a high-severity heuristic indicates the document is a lure for a password-protected archive, a common tactic to bypass gateway security. The document body, though heavily obfuscated, contains the same URL, reinforcing its malicious intent.

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.
  • 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
  • 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/wb?keyword=cpwd%20works%20manual%202010%20pdf
    • http://kuvep.trainstationdancefitness.com/uploads/1/3/0/8/130874359/fawagutitusepuku.pdf
    • https://cdn.shopify.com/s/files/1/0430/9054/2753/files/jokugu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/92674661261.pdf
    • https://cdn.shopify.com/s/files/1/0431/6043/6896/files/79659563630.pdf
    • https://cdn.shopify.com/s/files/1/0438/1730/4226/files/58094360086.pdf
    • https://cdn.shopify.com/s/files/1/0440/7646/6328/files/af_form_910.pdf
    • https://cdn.shopify.com/s/files/1/0428/1332/5471/files/24298976059.pdf
    • https://cdn.shopify.com/s/files/1/0436/3508/1374/files/61555076247.pdf
    • https://cdn.shopify.com/s/files/1/0434/0416/5285/files/microsoft_office_access_free_for_mac.pdf
    • https://cdn.shopify.com/s/files/1/0430/9742/4026/files/7577178024.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/free_background_funny_music.pdf
    • https://cdn.shopify.com/s/files/1/0431/9445/0082/files/rofagufigifukawanalusalep.pdf
    • https://cdn.shopify.com/s/files/1/0427/9681/0396/files/sixapuxinisoponexa.pdf
    • https://cdn.shopify.com/s/files/1/0431/6826/8448/files/lapepaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/1659/3312/files/xuniminonoxevixolewadusiz.pdf
    • https://cdn.shopify.com/s/files/1/0435/3415/5928/files/double_gate_fold_brochure_template_indesign.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_off0002abee.bin
dbb0e6d40cca5c3411a51483c62d0125c22d26c3a857bc064f2ce8fb431ef2ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ABEE 5576 bytes
font_01_sfnt_off0002bee9.bin
edb1cf88e24ca81f6ed93177c72efcc6f08f96c553c2127d062c2ad3e8f2f3f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BEE9 16748 bytes

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