Malicious PDF — malware analysis report

Static analysis result for SHA-256 e66ba04efe6a8245…

MALICIOUS

PDF

42.0 KB Created: 2020-08-31 00:24:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94306a8719a9f3d731be5d65ead14a53 SHA-1: 7f3220de921c0eaab88a0f1681c5235e3723a0dc SHA-256: e66ba04efe6a824518eea585094d4afb43dc624639191ffd2ac1f445f6bd64aa
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, with one identified as a malicious redirector. The heuristic firings indicate a PDF link farm, suggesting an attempt to distribute malicious content or engage in SEO poisoning. The document body, though heavily obfuscated, contains references to URLs that align with the detected heuristics.

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/wix?keyword=wistron+neweb+corporation+connected+to+my+wifi
    • https://static.usrfiles.com/ugd/05900a_c055f4e5c7164d6aa354faf97df02008.pdf
    • https://static.usrfiles.com/ugd/d775a9_f8b9ffd5a2a749a591e9bfa047319cc6.pdf
    • https://static.usrfiles.com/ugd/b9801a_85c5d2c413594a5790cd53e441df2140.pdf
    • https://static.usrfiles.com/ugd/6a22cb_b67801a47dbb48b1bfb59dbdf6f51080.pdf
    • https://cdn.shopify.com/s/files/1/0433/7208/5406/files/91078206086.pdf
    • https://cdn.shopify.com/s/files/1/0452/6351/9906/files/nirawatabozusexi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6469/6732/files/guerra_espiritual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/55742160690.pdf
    • https://cdn.shopify.com/s/files/1/0436/1905/7826/files/88658265077.pdf
    • https://cdn.shopify.com/s/files/1/0432/5274/4356/files/marathi_calendar_2020_september.pdf
    • https://cdn.shopify.com/s/files/1/0433/4062/8136/files/jiwipegipanela.pdf
    • https://cdn.shopify.com/s/files/1/0429/5360/5273/files/24369827796.pdf
    • https://cdn.shopify.com/s/files/1/0433/6612/1623/files/12886847636.pdf
    • https://cdn.shopify.com/s/files/1/0435/7881/8715/files/angry_love_status_video.pdf
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/14273385491.pdf
    • https://cdn.shopify.com/s/files/1/0431/8501/2900/files/the_art_of_travel_alain_de_botton_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/5904/3749/files/abhimaan_film_all_songs.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_off000065a3.bin
0de06cde3f077c26f414441e0b20481d229fa3fd6c06d8d0caaeddf9a9f3d758		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65A3 5616 bytes
font_01_sfnt_off000078b4.bin
38eafbd9f5d74f6e0b0323aa54a80341f97c21a4e36ec1c6cfc9ac07ef4e1b78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78B4 9980 bytes

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