Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccb283a7d4817c39…

MALICIOUS

PDF

41.7 KB Created: 2020-08-15 17:21:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e210334c5061771833bd92d317263d62 SHA-1: 42092675c43a70f5ea31d5709d242c79f48f8afe SHA-256: ccb283a7d4817c39e3b8e65214b6a7de8cc4bcc2eea6c4f2a99684b682d61300
130 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical heuristic firing for a malicious redirector, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains text related to 'Pf withdrawal form pdf 2019' and includes the malicious URL, reinforcing the lure. The primary malicious URL is ttraff.com, which is known to host redirectors. The presence of numerous other links, many pointing to Shopify, suggests a link farm used for SEO poisoning or distributing the final payload.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wb?keyword=pf%20withdrawal%20form%20pdf%202019
    • http://files.planninginblackandwhite.com/uploads/1/3/0/7/130739991/xitapuvo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7757/4551/files/35293282768.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8584587797.pdf
    • https://cdn.shopify.com/s/files/1/0435/1351/2100/files/factor_de_carga_electrica.pdf
    • https://cdn.shopify.com/s/files/1/0428/2603/9463/files/69997773294.pdf
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/fuxagezoj.pdf
    • https://cdn.shopify.com/s/files/1/0430/7084/9181/files/55303526479.pdf
    • https://cdn.shopify.com/s/files/1/0435/1646/1211/files/bsc_nursing_3rd_year_syllabus_ruhs.pdf
    • https://cdn.shopify.com/s/files/1/0438/1851/6637/files/zevonobumuwotu.pdf
    • https://cdn.shopify.com/s/files/1/0430/9575/2864/files/75441055108.pdf
    • https://cdn.shopify.com/s/files/1/0435/6312/2843/files/elemental_shaman_leveling_talents.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/74811657718.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_off0000640a.bin
6dbc3932fe4ffc6da5aab8bcd0cca2178bd83affb26150a9098e1a878cd43dd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x640A 5676 bytes
font_01_sfnt_off00007749.bin
9e9ef6150b7f4bc4f0974f6d1f48a2eb8195a6c5552376d0f8efdbcba084ec1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7749 10272 bytes

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