Malicious PDF — malware analysis report

Static analysis result for SHA-256 be59a6dfc4506378…

MALICIOUS

PDF

39.3 KB Created: 2020-08-15 21:32:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f3180b8aa34bf8de66009a55fbbc416 SHA-1: 6bbceff290543259d851ff6388fdffdd09d19607 SHA-256: be59a6dfc4506378d95dd14663b7f037adf425e585de3b6fce6009caf0cc1c05
120 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.com/wb?keyword=calligraphy%20tutorial%20pdf`. This indicates the document's primary purpose is to lure the user to a malicious site. The document also contains a large number of embedded links, many hosted on `cdn.shopify.com`, suggesting a link farm or SEO poisoning tactic to distribute the malicious URL. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector is sufficient evidence.

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/wb?keyword=calligraphy%20tutorial%20pdf
    • http://files.newgeorgiaclaywork.com/uploads/1/3/0/7/130775515/lujonepik.pdf
    • http://files.aikendao.com/uploads/1/3/2/6/132695519/5a020a68c.pdf
    • http://files.afparc.org/uploads/1/3/0/7/130739119/kotodivuzuzegunino.pdf
    • http://files.lindastantonart.com/uploads/1/3/0/8/130814058/78e991148e900.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37263727017.pdf
    • https://cdn.shopify.com/s/files/1/0438/7287/8747/files/fidesisifodiwopun.pdf
    • https://cdn.shopify.com/s/files/1/0432/0342/8510/files/5367520044.pdf
    • https://cdn.shopify.com/s/files/1/0431/6489/3345/files/kirolebajipusuj.pdf
    • https://cdn.shopify.com/s/files/1/0437/7785/1550/files/bell_tiles_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0431/1541/3658/files/nisokaruw.pdf
    • https://cdn.shopify.com/s/files/1/0432/8207/1716/files/95375207586.pdf
    • https://cdn.shopify.com/s/files/1/0429/7365/9292/files/3143804041.pdf
    • https://cdn.shopify.com/s/files/1/0435/5332/5215/files/bilivoxagusafulenipezi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2784/0669/files/11235040458.pdf
    • https://cdn.shopify.com/s/files/1/0429/3161/7945/files/physics_principles_and_problems_answers.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_off00005dac.bin
aa47d70b9bd697fe1bc2472b3ffa8ea273d93a70e33704143fd0efe22abaedcb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DAC 5132 bytes
font_01_sfnt_off00006f26.bin
fcb2a353596cfa5410b94ce0578e6212763083501dcc01506767ea623369fab0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F26 9876 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.