Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd8e540abf3f2ba8…

MALICIOUS

PDF

45.2 KB Created: 2020-08-14 11:42:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 691fdf7893bd02c4d9e169ff53f8dfb0 SHA-1: fa64945f05db93faf4231065a4584781832e35e0 SHA-256: fd8e540abf3f2ba8b032062b89241d6e3fb4d14bdccd8d7132b385c5c9386a4e
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL is https://ttraff.cc/wb?keyword=anti%20theft%20system%20for%20cars%20pdf, which is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, contains references to 'anti theft system for cars pdf' and the malicious URL, suggesting a lure to entice users to click the links. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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/wb?keyword=anti%20theft%20system%20for%20cars%20pdf
    • http://files.southportlandlacrosseboosters.com/uploads/1/3/0/7/130775462/xibof.pdf
    • http://files.texaspaganstudents.org/uploads/1/3/1/4/131453384/mupatirof.pdf
    • http://files.cleggenglish.com/uploads/1/3/1/8/131856358/8186382.pdf
    • http://pozoz.realestateagentcadway.com/uploads/1/3/0/9/130969754/tifaj_nujusosi_bepusisoliwegex_jedebojofa.pdf
    • https://cdn.shopify.com/s/files/1/0432/9088/6312/files/49571893063.pdf
    • https://cdn.shopify.com/s/files/1/0433/9780/8285/files/xuvajusofubowemuwekoses.pdf
    • https://cdn.shopify.com/s/files/1/0432/3190/3902/files/21415412640.pdf
    • https://cdn.shopify.com/s/files/1/0428/8380/9447/files/titedilujevovutegonuza.pdf
    • https://cdn.shopify.com/s/files/1/0433/9014/0581/files/kejifinosijewidujonaga.pdf
    • https://cdn.shopify.com/s/files/1/0434/1350/4156/files/handwriting_exercises_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0438/6462/1211/files/kingdom_hearts_1._5_strategy_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/6706/4991/files/lufejezavosov.pdf
    • https://cdn.shopify.com/s/files/1/0431/0673/0138/files/butomelopomem.pdf
    • https://cdn.shopify.com/s/files/1/0433/9780/8285/files/59485980543.pdf
    • https://cdn.shopify.com/s/files/1/0432/8436/5468/files/add_bookmark_nitro.pdf
    • https://cdn.shopify.com/s/files/1/0435/5253/8787/files/autocad_publish_to_transparency.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_off000072a2.bin
e357bab03a32ed5b2644339de343555a29fd40f1285d671d6fc42e14eba41bba
pdf-font-stream PDF embedded font (sfnt) at offset 0x72A2 5456 bytes
font_01_sfnt_off00008506.bin
ec81aa3355061f27bc60b2ca0c93b563f486daf9742e97e8f0530d51e9c4dbc5
pdf-font-stream PDF embedded font (sfnt) at offset 0x8506 10148 bytes