Malicious PDF — malware analysis report

Static analysis result for SHA-256 3490b3886ec90104…

MALICIOUS

PDF

51.9 KB Created: 2020-08-30 03:13:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cc853f18c724e5ff6013dd50226640e0 SHA-1: 8ca755358cfcafaba403d9d9277cbb3cb90fa174 SHA-256: 3490b3886ec901046a516d38720c623b32faca66484b887564791c62bc3e4dbe
128 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is ttraff.cc, which is used in conjunction with a lure for a free font download. While the document body is heavily obfuscated, the presence of the malicious URL and the link farm heuristic strongly suggest a phishing or redirection attack. No scripts were extracted from this sample.

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.
  • 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=akkurat+pro+bold+font+free
    • https://static.usrfiles.com/ugd/12f4eb_c65ceff755d442cf81701c5b8d996a3b.pdf
    • https://static.usrfiles.com/ugd/b8c837_20bf0c9171154a18bdc394bd83543d88.pdf
    • https://static.usrfiles.com/ugd/ae15ca_1b6f4bdf11ff4552903708c95a10cbd7.pdf
    • https://static.usrfiles.com/ugd/b8c837_eb2c15093a80485a9d851f595bd3b2e4.pdf
    • https://static.usrfiles.com/ugd/ea9bdf_9d1141367a364866b38df7064c5c5a47.pdf
    • https://cdn.shopify.com/s/files/1/0437/0232/1307/files/litavupoxegupevasin.pdf
    • https://cdn.shopify.com/s/files/1/0434/0649/1797/files/ribasejomize.pdf
    • https://cdn.shopify.com/s/files/1/0430/8808/5143/files/gi_joe_imdb_parents_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/7754/1787/files/80960647810.pdf
    • https://cdn.shopify.com/s/files/1/0427/6443/5612/files/wivakafomonufasaxadum.pdf
    • https://cdn.shopify.com/s/files/1/0437/7994/8695/files/gopamisariwivu.pdf
    • https://cdn.shopify.com/s/files/1/0427/3248/6823/files/78749220381.pdf
    • https://cdn.shopify.com/s/files/1/0440/4399/3238/files/gakoxafulenisasubemu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/jiwiwerekobuk.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006903.bin
6dfd1294228dfe464d9c301d9fe94a45c9597adef59f06190b1c109327f0341d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6903 4884 bytes
font_01_sfnt_off000079a4.bin
8a3b8f9ad08f143d596f5eced1273f25abf92b6d8fad147b02d782bd3d4d0c7a
pdf-font-stream PDF embedded font (sfnt) at offset 0x79A4 11108 bytes
font_02_sfnt_off00009f8e.bin
e5245523bd71a78e06ca3300da63f55ad096e28dd8c1a5e83e138be64f7d0aee
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F8E 16084 bytes
font_03_sfnt_off0000b442.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xB442 4324 bytes