Malicious PDF — malware analysis report

Static analysis result for SHA-256 f42729f0a124b092…

MALICIOUS

PDF

46.3 KB Created: 2020-08-04 07:15:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9696ad8ede2d6ceba00d94cdd49547dd SHA-1: 62514ed4bc12c7525416cb29bd9eca40b49bda4a SHA-256: f42729f0a124b092a18ed505c350ffabd9da9d6aa5e513714609b81f3274190e
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, a common tactic for SEO poisoning or link farming. One of these links, 'https://ttraff.cc/pify?keyword=soda+pdf+compressor', is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to PDF tools and the malicious URL, suggesting a lure to disguise the malicious intent. The primary goal appears to be redirecting the user to malicious infrastructure.

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.cc/pify?keyword=soda+pdf+compressor
    • http://files.sdstarresources.org/uploads/1/3/0/7/130739404/1da4a282f7f.pdf
    • http://files.smartbrainenglish.com/uploads/1/3/1/0/131070469/6594031.pdf
    • http://files.jkaufmanstudios.com/uploads/1/3/0/8/130873708/rozega.pdf
    • http://files.thirddropcoffee.com/uploads/1/3/0/7/130740412/3742716.pdf
    • http://files.achswritersweek.com/uploads/1/3/1/4/131452883/05d4f277981.pdf
    • https://cdn.shopify.com/s/files/1/0432/1237/4174/files/hackintosh_boot_flags.pdf
    • https://cdn.shopify.com/s/files/1/0436/1561/7182/files/tesla_model_x_specifications.pdf
    • https://cdn.shopify.com/s/files/1/0434/3015/0296/files/13698490434.pdf
    • https://cdn.shopify.com/s/files/1/0431/4857/4884/files/fupofexoxabevapuditaxi.pdf
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/48584762168.pdf
    • https://cdn.shopify.com/s/files/1/0431/8570/1019/files/55514425899.pdf
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/ponenu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9833/3599/files/google_translate_detect_language_to_english.pdf
    • https://cdn.shopify.com/s/files/1/0433/9387/6118/files/sekakezunesivu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b32.bin
4dbce88d05f737b7a84abfe76467e4fa30fe8165a2622931f5ed905200cabeb0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B32 4924 bytes
font_01_sfnt_off00007be5.bin
f179033040269d2b3fd5a5e08e44bab5172b8ace1592f6609c37f5ef96dcbc56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE5 10076 bytes
font_02_sfnt_off00009e78.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E78 4324 bytes

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