Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff40b053d20a8837…

MALICIOUS

PDF

73.1 KB Created: 2020-08-31 05:12:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c49f12958da6af66aad231230cc5fac SHA-1: 52c35c9dcdd018cfda912c99d9f0d51dec94ed78 SHA-256: ff40b053d20a883747e9e68ca8a4d413afcb252a068f49fc3196eda203c63cdc
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains a link to a redirector URL, which is a common tactic for delivering malicious payloads. The document body, though heavily obfuscated, contains the URL 'https://ttraff.link/wix?keyword=devil+may+cry+4+android', suggesting a lure to download or access content related to 'Devil May Cry 4 Android'. The PDF also hosts a link farm pointing to numerous other PDFs, likely for SEO poisoning or to obscure the malicious redirector. The presence of a visual download button further supports the social engineering aspect of this attack.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=devil+may+cry+4+android
    • https://static.usrfiles.com/ugd/b8c837_99cd530dd41948248b703be9429a89b2.pdf
    • https://static.usrfiles.com/ugd/d902bb_45060327c0c64197bb84f4a88be4d32d.pdf
    • https://static.usrfiles.com/ugd/b8c837_0c10aad2fbc846258c93f6f9b85cf4f6.pdf
    • https://cdn.shopify.com/s/files/1/0462/5340/8410/files/93567499083.pdf
    • https://cdn.shopify.com/s/files/1/0447/8776/1313/files/32815943179.pdf
    • https://cdn.shopify.com/s/files/1/0433/7516/5594/files/82622710233.pdf
    • https://cdn.shopify.com/s/files/1/0437/0278/0057/files/simile_and_metaphor_worksheet_grade_4.pdf
    • https://cdn.shopify.com/s/files/1/0436/4392/8726/files/japuduxefobezexavizute.pdf
    • https://static.usrfiles.com/ugd/d63aaf_5c9a509524374b498e5244fe9c5c6482.pdf
    • https://static.usrfiles.com/ugd/b8c837_a7980357f7b346768abc43f292b356c5.pdf
    • https://static.usrfiles.com/ugd/fe83c3_fbb79b78866649c8897443557d347b78.pdf
    • https://static.usrfiles.com/ugd/e23fbb_f04cc1c5ee2749cdac028334262b7458.pdf
    • https://static.usrfiles.com/ugd/b8c837_5be4f193f219455d8047db8ff99135ce.pdf
    • https://static.usrfiles.com/ugd/b8c837_5eec4bbe028b4a24be489570cf5eb964.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_off0000d57b.bin
2caba3fdd17a0660d75b3c6d11262ea1b4162e0fe4a72e082d9a994c2814dfcb
pdf-font-stream PDF embedded font (sfnt) at offset 0xD57B 3636 bytes
font_01_sfnt_off0000e276.bin
e0bc162deaebab504474025f1e338afc2e32fda3d08595d780fb7f4dca58f613
pdf-font-stream PDF embedded font (sfnt) at offset 0xE276 5156 bytes
font_02_sfnt_off0000f3f6.bin
c780778e91db10553d7f8ecd44e5063e749d7be17739eedd6335989b095ca6ca
pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F6 10244 bytes