Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f27be714ffa950d…

MALICIOUS

PDF

35.1 KB Created: 2020-08-12 09:24:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ad64d25a270ce86c789ee74f1ff6dff SHA-1: a33dd8dfa5a5a2514633959c4e957c3800270870 SHA-256: 7f27be714ffa950d6c007db794157295c63abe78a3722565ea16d750e6ca75d3
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, with the primary link pointing to a known malicious redirector. The document body mimics a book title to appear legitimate, while the embedded links are designed to lead users to potentially harmful sites. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a phishing or redirection attempt.

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=cezar+roberto+bitencourt+manual+de+direito+penal+parte+geral+pdf
    • http://fawudub.paraglidinginhongkong.com/uploads/1/3/1/4/131407406/6287787.pdf
    • http://files.saffronfineart.com/uploads/1/3/2/7/132740637/rezubamadadiga.pdf
    • http://files.edgeglobalsupply.com/uploads/1/3/1/4/131438245/davozapazogotewowago.pdf
    • http://files.trezevantchurchofchrist.org/uploads/1/3/1/6/131637178/vuwunenoxugemogekona.pdf
    • https://cdn.shopify.com/s/files/1/0430/9647/3749/files/85383907434.pdf
    • https://cdn.shopify.com/s/files/1/0434/0131/4454/files/sewowulexudutipor.pdf
    • https://cdn.shopify.com/s/files/1/0434/3257/5132/files/dujupipubir.pdf
    • https://cdn.shopify.com/s/files/1/0438/8651/0232/files/mebuziteg.pdf
    • https://cdn.shopify.com/s/files/1/0429/2801/3471/files/orthographic_projection_in_autocad.pdf
    • https://cdn.shopify.com/s/files/1/0432/0336/2973/files/1986_chevy_c10.pdf
    • https://cdn.shopify.com/s/files/1/0432/5795/4464/files/vubumexoxitomameletavixo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3699/9833/files/68143036195.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69262577592.pdf
    • https://cdn.shopify.com/s/files/1/0430/5692/2777/files/renupelepepipikoli.pdf
    • https://cdn.shopify.com/s/files/1/0435/2652/0987/files/do_twitch_affiliates_get_emotes.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_off000046cc.bin
3c00c0a986c2c3392edd392afcf9d180f08dba6c7308592eee47fb4e3ed841b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x46CC 5392 bytes
font_01_sfnt_off0000590e.bin
986b858b2e0840a9cb347a3b681914b155385edc6529a10b7b84b349e880aaa7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x590E 12068 bytes

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