Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ac6722c68df3a3d…

MALICIOUS

PDF

47.9 KB Created: 2020-09-12 07:21:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89996142607a0b3760f680c8f63211b6 SHA-1: 0b183b8ae83d08814d85771fc2108d5cd5734cbf SHA-256: 9ac6722c68df3a3d1a9fb911fcc8173ae12220e27b00b2de5094e375140f3ec8
128 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains text referencing 'Adobe reader 11 offline installer' and includes URLs that appear to be part of a link farm designed to attract search engine traffic. The primary malicious URL identified is https://ttraff.link/pify?keyword=adobe+reader+11++offline+installer, which likely serves as a lure for downloading malware disguised as a legitimate software installer.

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/pify?keyword=adobe+reader+11++offline+installer
    • http://files.postichewigs.com/uploads/1/3/1/3/131379111/lonakasef_vuperuf.pdf
    • http://faxugatu.shine-bu.com/uploads/1/3/1/4/131408100/8562094.pdf
    • http://files.enneagramplayground.com/uploads/1/3/1/4/131453989/8682024.pdf
    • https://static.usrfiles.com/ugd/e745be_ca911f780162474eacbe13d7e67a76aa.pdf
    • https://static.usrfiles.com/ugd/ac51ce_710698b8b9084275bac281527d22cae7.pdf
    • https://static.usrfiles.com/ugd/e5412a_d312ec52b65644fdb7ca1f891d25c926.pdf
    • https://static.usrfiles.com/ugd/828753_0885b133d1554de1a8b345fb52df7491.pdf
    • https://static.usrfiles.com/ugd/599f1c_92d856cfa61f4f58aa1f706b37ee2b02.pdf
    • https://static.usrfiles.com/ugd/140efa_42119a2ed684460dbd9f0133128a82f1.pdf
    • https://static.usrfiles.com/ugd/33ab24_522210d30e1e48ebbededb11eecf0f24.pdf
    • https://cdn.shopify.com/s/files/1/0434/1855/0428/files/critical_theory_today_lois_tyson.pdf
    • https://cdn.shopify.com/s/files/1/0430/6318/1463/files/42279133392.pdf
    • https://cdn.shopify.com/s/files/1/0430/8575/8618/files/60886036215.pdf
    • https://cdn.shopify.com/s/files/1/0434/0210/0886/files/levofujomadeku.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_off000070ee.bin
49fba995027fb50c4ce934cac8c01a0aacbe6c2524b556c11720b5b0f1a5c6d6
pdf-font-stream PDF embedded font (sfnt) at offset 0x70EE 4872 bytes
font_01_sfnt_off0000817e.bin
46ef31882008d11c4307cc38d673f10199bcc94e089ab538e95b1949d7ba88df
pdf-font-stream PDF embedded font (sfnt) at offset 0x817E 10360 bytes
font_02_sfnt_off0000a4db.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0xA4DB 4324 bytes