Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a982d749b3f88a7…

MALICIOUS

PDF

44.7 KB Created: 2020-09-01 09:01:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d1775870d0c261bd76ad1fedae618d27 SHA-1: e4700814412c17ffa8d52455175b5986d1ee5ce5 SHA-256: 1a982d749b3f88a7151dcda4e653baaf5392fac904c93b0822c1ec83f97c7247
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=gems+cambridge+international+school+adec+report'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same redirector URL, suggesting a deliberate attempt to lead the user to a malicious site.

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.cc/wix?keyword=gems+cambridge+international+school+adec+report
    • https://cdn.shopify.com/s/files/1/0434/6747/3046/files/9545841722.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mojijemorewowasimagaxo.pdf
    • https://cdn.shopify.com/s/files/1/0437/5052/3029/files/niobe_labs_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/5905/9615/files/functions_of_financial_management.pdf
    • https://cdn.shopify.com/s/files/1/0439/3736/6184/files/80192619362.pdf
    • https://cdn.shopify.com/s/files/1/0428/1355/4855/files/looking_at_student_work_protocol.pdf
    • https://cdn.shopify.com/s/files/1/0435/3379/5477/files/laser_cut_3d_puzzle_template.pdf
    • https://cdn.shopify.com/s/files/1/0432/2603/8433/files/sotobimiwalawasora.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/java_programming.pdf
    • https://static.usrfiles.com/ugd/451461_5ba4d6723758451b84a3bd34233c5782.pdf
    • https://static.usrfiles.com/ugd/9ff9b8_5a5d4507ca9f45d389b05e60929ee172.pdf
    • https://static.usrfiles.com/ugd/73f3b0_af18f8a5805d4edbacb2f672331a8f5e.pdf
    • https://static.usrfiles.com/ugd/6260fe_f7014fc9c74c4620b71b084c086dcaf4.pdf
    • https://static.usrfiles.com/ugd/b8c837_6f20a658b6594a728d1e632be534843f.pdf
    • https://static.usrfiles.com/ugd/fac845_892a130e27ef46afbfc41159980f77ab.pdf
    • https://static.usrfiles.com/ugd/b916f4_b063165ba28b4264a3cb2bca5bf0e8c0.pdf
    • https://static.usrfiles.com/ugd/b8c837_41934b2beee5442ca25610b90fd6c930.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_off00005eb1.bin
ee05a3fe6b069eb93d182331ec15d07b2e671f74eed4326aca98fab12af114f8
pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB1 5444 bytes
font_01_sfnt_off000070fb.bin
9318edb289671c0b744d30cea7a71da858bad3d1c060178a15639a8794ff71f8
pdf-font-stream PDF embedded font (sfnt) at offset 0x70FB 10744 bytes
font_02_sfnt_off000095b3.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x95B3 4324 bytes