Malicious PDF — malware analysis report

Static analysis result for SHA-256 d60911129ab631bc…

MALICIOUS

PDF

43.0 KB Created: 2020-08-29 17:18:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1883de0fa40febb8be2c5c018eafc6da SHA-1: 956e180f5a8bf68aad9e0f464a28fb750e3a1249 SHA-256: d60911129ab631bc152ba80bb6986c80d26c4f88125977e29a40664e8ac8ffa4
148 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/wix?keyword=delaware+llc+filing+fee'. Additionally, it exhibits a PDF link farm pattern with numerous external links, many hosted on 'static.usrfiles.com'. The document body, though heavily obfuscated, contains keywords related to 'llc filing fee' and embedded URLs, suggesting a lure to a phishing or scam page. The presence of a callback lure heuristic further supports a phishing or social engineering attack.

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=delaware+llc+filing+fee
    • https://static.usrfiles.com/ugd/b8c837_cf160c16b3a14e759070df4827834312.pdf
    • https://static.usrfiles.com/ugd/b8c837_dd6b989234fb4b62b9efc3dbff31a08e.pdf
    • https://static.usrfiles.com/ugd/b8c837_4d2c3bb36f12404e811aa3ac48835d09.pdf
    • https://static.usrfiles.com/ugd/b8c837_260a36ff4bd146d7914a3785e69143f1.pdf
    • https://cdn.shopify.com/s/files/1/0435/2393/2311/files/audio_frequency_oscillator_experiment.pdf
    • https://cdn.shopify.com/s/files/1/0434/9739/0244/files/gumeluvepitugotebofuw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9026/4742/files/senimukeviraputatup.pdf
    • https://cdn.shopify.com/s/files/1/0431/8583/2096/files/spark_big_data_tutorial.pdf
    • https://static.usrfiles.com/ugd/a86d68_f4f4c084fdca4bad9c191c36fd532b9f.pdf
    • https://static.usrfiles.com/ugd/b8c837_1e95fec18a414b6698e1d9e79c1d23d1.pdf
    • https://static.usrfiles.com/ugd/b8c837_7c72f334c528493b952c08b1d27cbea0.pdf
    • https://static.usrfiles.com/ugd/b8c837_dac046756b5645e0902e25a83b11bb75.pdf
    • https://static.usrfiles.com/ugd/b8c837_535d5e5d905d4592bf1b433bcf1437bc.pdf
    • https://static.usrfiles.com/ugd/b8c837_abb20bad16374a96ba6a072e9a25c470.pdf
    • https://static.usrfiles.com/ugd/b8c837_577d03c2bc6a44589703ca04f8528cd5.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_off00006a55.bin
de4094fb420a73634bbdf0e10494d9c958006270f74cdd265537562df90b4be4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A55 4960 bytes
font_01_sfnt_off00007b5f.bin
ecee9793ee888cc5a249369b48fcd1cd37bdaa184944b190b9649cbb1244ddcd
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B5F 10380 bytes