Malicious PDF — malware analysis report

Static analysis result for SHA-256 e481189ec0356ca8…

MALICIOUS

PDF

45.1 KB Created: 2020-08-24 04:05:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f93ae1ad9b6b237795f4bdb8b4fea44c SHA-1: 07efb0555d3b86416b54f89e1e5cb5ae047d03cf SHA-256: e481189ec0356ca8f4c297280f50f48511a3aea090ca8f3a4d350eeea44b2b74
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Age of Empires 2 free microsoft' and a URL that appears to be a lure. The presence of a 'download button' heuristic further supports the attack pattern of luring users to click malicious links. The primary malicious URL identified is https://ttraff.ru/pify?keyword=age+of+empires+2+free++microsoft.

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.ru/pify?keyword=age+of+empires+2+free++microsoft
    • http://files.houlechiropractic.com/uploads/1/3/1/3/131379904/197f919077aa955.pdf
    • http://zevurik.guysurfaces.com/uploads/1/3/1/3/131379732/mafodibober.pdf
    • https://cdn.shopify.com/s/files/1/0462/4134/9786/files/admin_login_page_template_in_html.pdf
    • https://cdn.shopify.com/s/files/1/0454/7867/4584/files/33604504606.pdf
    • https://cdn.shopify.com/s/files/1/0433/3663/0422/files/95017345821.pdf
    • https://cdn.shopify.com/s/files/1/0438/2156/4066/files/gajajisejabasusejasodiw.pdf
    • https://cdn.shopify.com/s/files/1/0434/7228/9944/files/guzuwelagesusupiruvajaj.pdf
    • https://cdn.shopify.com/s/files/1/0438/0357/4434/files/63078582583.pdf
    • https://cdn.shopify.com/s/files/1/0434/9073/8328/files/rfid_based_automatic_car_parking_system_project_report.pdf
    • https://cdn.shopify.com/s/files/1/0438/1592/7965/files/actos_juridicos_no_formales.pdf
    • https://cdn.shopify.com/s/files/1/0431/7193/8461/files/menerali.pdf
    • https://cdn.shopify.com/s/files/1/0437/4704/9621/files/software_diagnostico_auto_delphi.pdf
    • https://cdn.shopify.com/s/files/1/0430/3152/7577/files/13598405279.pdf
    • https://cdn.shopify.com/s/files/1/0434/8028/5348/files/pasure.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_off00005d22.bin
14925f83f40669a53047a22908ff395ce78644edb17905aebfec14582ddebc8d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D22 5216 bytes
font_01_sfnt_off00006ed8.bin
f31fae5163cde009a2281e6d2d4b121b544c7e574ffdd1806dfea163fbd8a398
pdf-font-stream PDF embedded font (sfnt) at offset 0x6ED8 10128 bytes
font_02_sfnt_off000091b6.bin
c286131fd4aa28075b5e406c559e01e688b1a0c136de28944d919ba4dcdd9e4b
pdf-font-stream PDF embedded font (sfnt) at offset 0x91B6 16208 bytes