Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdef7a3e74bf28d4…

MALICIOUS

PDF

43.7 KB Created: 2020-09-02 23:06:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4270c7c8904c19aff753e37a6f1149d6 SHA-1: 00a5a4d75b7802ca2b6af8ce658912a3908f12f0 SHA-256: bdef7a3e74bf28d4cb78f25c25b6b5c5b730964bf01c8c55b9498d521fdfe608
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the URL that triggers this redirection. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a large number of external links, suggesting a tactic to distribute malicious content or manipulate search engine results. The primary IOC is the redirector URL.

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/wix?keyword=canon+powershot+elph+190+is+user+guide
    • https://cdn.shopify.com/s/files/1/0433/4416/7064/files/roxix.pdf
    • https://cdn.shopify.com/s/files/1/0431/7511/6961/files/the_way_of_kings_book_1.pdf
    • https://cdn.shopify.com/s/files/1/0431/4277/4938/files/lofegopunewezomoxekito.pdf
    • https://cdn.shopify.com/s/files/1/0437/7139/6257/files/lubabejebuzuwexafomu.pdf
    • https://cdn.shopify.com/s/files/1/0428/2974/2246/files/43339198056.pdf
    • https://static.usrfiles.com/ugd/b8c837_3b6e3b6021034155861f02ebd27a7b7e.pdf
    • https://static.usrfiles.com/ugd/b65acf_519255537ba94d938127627c07f11a7a.pdf
    • https://static.usrfiles.com/ugd/b8c837_727369acb38440cc9e82b2393f2d1ed3.pdf
    • https://static.usrfiles.com/ugd/ad2ade_45e536ea09004a37b7666c93d8836177.pdf
    • https://static.usrfiles.com/ugd/165585_e3d11f6355f94741a8a8d39d03d74afb.pdf
    • https://cdn.shopify.com/s/files/1/0440/2351/3238/files/14334565257.pdf
    • https://cdn.shopify.com/s/files/1/0429/4973/8650/files/identifying_four_kinds_of_sentences_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20880330559.pdf
    • https://cdn.shopify.com/s/files/1/0437/1673/9222/files/53414121346.pdf
    • https://cdn.shopify.com/s/files/1/0429/3564/8409/files/kelotadugig.pdf
    • https://cdn.shopify.com/s/files/1/0434/9214/7352/files/gixugowezadoriwulason.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vuxevitilikibuvenimomabu.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_off000067f6.bin
99d46baaa9f063b7d4ff5a26d8a2d0650148eb7f0d4ff4450b2d4e42c9e795a0
pdf-font-stream PDF embedded font (sfnt) at offset 0x67F6 5568 bytes
font_01_sfnt_off00007af4.bin
3cac6c59ff52bbadc7ca450b26495045746fa57deb86fec4b9c6259b43ffd11e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF4 11516 bytes