Malicious PDF — malware analysis report

Static analysis result for SHA-256 881a7af29151aefc…

MALICIOUS

PDF

38.5 KB Created: 2020-09-11 11:43:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b10b73146b109225312def030ad6ce1 SHA-1: 3a526e5b5f2a502dafc563a0c91d765384c78b41 SHA-256: 881a7af29151aefca02393cf72bb6651fa72a7b3969279f461b0da33b14b2ffb
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, forming a link farm designed to redirect users. One of the primary links, 'https://ttraff.link/wix?keyword=bathilda+bagshot+a+history+of+magic+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this same malicious URL, reinforcing the attack pattern. The presence of numerous benign-looking PDF links hosted on 'static.usrfiles.com' alongside the malicious redirector suggests a tactic to obscure the malicious intent.

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.link/wix?keyword=bathilda+bagshot+a+history+of+magic+pdf
    • http://files.crowsnestpassmusicfestival.com/uploads/1/3/2/7/132740399/bifuzefubunu-nepoto-rokiwoje-riwuguf.pdf
    • http://files.probatehomesgetsold.com/uploads/1/3/0/8/130814597/3208bad3f96.pdf
    • http://sokonanog.vstsandmore.com/uploads/1/3/1/0/131069839/wetexupebexege_bodijetusiloje_lotoxaw.pdf
    • http://kukisa.thehorsebakery.com/uploads/1/3/0/7/130740596/ralewizapugozi.pdf
    • http://selenoz.performanceprogramscompany.com/uploads/1/3/2/6/132683188/gewaxepagul-jajegikilo.pdf
    • http://laker.hawaiianbar.org/uploads/1/3/1/6/131606490/7160859.pdf
    • http://kobub.jenniphelanphotography.com/uploads/1/3/1/3/131381886/vebemopidusop-jitomilo-milokejatadiw-bewogituji.pdf
    • https://static.usrfiles.com/ugd/0ebc1f_2fa5c75ddf38482a9dfd47e0a292fe00.pdf
    • https://static.usrfiles.com/ugd/3f4b99_326d431859844e5b9f321d77671b0248.pdf
    • https://static.usrfiles.com/ugd/5926b4_303bd09a4d9842ef8be5ca4be54a5602.pdf
    • https://static.usrfiles.com/ugd/10cedf_1a13186d96db466e816161bfc756a29f.pdf
    • https://static.usrfiles.com/ugd/895bef_2e62add786554c80a20f602fcd761851.pdf
    • https://static.usrfiles.com/ugd/6116da_8093651ab41f41b7aba1b740f87cbfc7.pdf
    • https://static.usrfiles.com/ugd/717a42_9437bde609dd4da2bb7ca978c15dcb05.pdf
    • https://static.usrfiles.com/ugd/b8c837_bfb6a894fa1941b5b53319ad9cec7686.pdf
    • https://static.usrfiles.com/ugd/90c678_1cb6a66989984a309fc3bb7963891d1b.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_off00005615.bin
481cbefafe77f7727bec7adeda8def88e4a65fed82d211744a7bf2238a60ca47
pdf-font-stream PDF embedded font (sfnt) at offset 0x5615 5860 bytes
font_01_sfnt_off000069e7.bin
c42459a182fd6c475d1e72db242f0d25b9649529f064ed0a8be93996268a8303
pdf-font-stream PDF embedded font (sfnt) at offset 0x69E7 10256 bytes