Malicious PDF — malware analysis report

Static analysis result for SHA-256 4beb98791367289e…

MALICIOUS

PDF

61.3 KB Created: 2020-08-08 15:51:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4abd0c271175e241510af45b36eb3cbb SHA-1: 266496444351771a52b4d4a66c0b5dcf30c80018 SHA-256: 4beb98791367289e7e754c408455e6d36be299201e7831fce2d0325ed1afe941
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=cardiac+arrest+journal+pdf'. It also contains a PDF link farm heuristic, indicating a large number of external links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same malicious URL. The primary attack pattern involves luring the user to click on a link that appears to be a journal PDF, but redirects 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.com/pify?keyword=cardiac+arrest+journal+pdf
    • http://bedaleref.gvdesigncontract.net/uploads/1/3/1/4/131454012/mixozanedifugeva.pdf
    • http://files.eatdancebreathe.com/uploads/1/3/2/7/132710722/zevavisefew.pdf
    • http://files.christineboake.com/uploads/1/3/2/7/132740620/f74114b85565e3.pdf
    • https://cdn.shopify.com/s/files/1/0427/9785/8972/files/kerapeninixup.pdf
    • https://cdn.shopify.com/s/files/1/0434/4525/6344/files/wedusodarasewodujapi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8303/8874/files/81898739515.pdf
    • https://cdn.shopify.com/s/files/1/0429/5429/3402/files/42888639053.pdf
    • https://cdn.shopify.com/s/files/1/0433/3525/4171/files/70071225340.pdf
    • https://cdn.shopify.com/s/files/1/0437/8486/3893/files/mechanics_of_materials_3rd_edition_philpot.pdf
    • https://cdn.shopify.com/s/files/1/0439/8150/4670/files/turijaxowemibojupu.pdf
    • https://cdn.shopify.com/s/files/1/0432/8236/6624/files/repijaraxinodoz.pdf
    • https://cdn.shopify.com/s/files/1/0431/4890/2557/files/aoc-_cv-_100.pdf
    • https://cdn.shopify.com/s/files/1/0431/5430/9284/files/social_history_of_england_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/0273/2448/files/cefr_grammar_levels.pdf
    • https://cdn.shopify.com/s/files/1/0429/6497/5765/files/rujiti.pdf
    • https://cdn.shopify.com/s/files/1/0436/4002/9344/files/51447660296.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/
    • https://cdn.shopify.com/s/files/1/0439/8150/4670

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a32a.bin
ae25e209a7351c51c3a254bcd81c3582cd29dbfeba120b22026939e67b72a035
pdf-font-stream PDF embedded font (sfnt) at offset 0xA32A 5132 bytes
font_01_sfnt_off0000b4b5.bin
73b7f719132f5b8dcf79d22e01d5b526a8c787d54d12785df5403f3ca96141cf
pdf-font-stream PDF embedded font (sfnt) at offset 0xB4B5 10996 bytes
font_02_sfnt_off0000d987.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0xD987 4324 bytes