Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9c98e0a72e10e14…

MALICIOUS

PDF

51.0 KB Created: 2020-08-25 02:31:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b53a8f8ce30cfb68a65198f0bc631109 SHA-1: a7695e151c0dde0b9e1e785ab9f632693de1f389 SHA-256: e9c98e0a72e10e140009d90ee52c3e1aff5053b09b93824788980090597f3358
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL. The presence of urgency language further supports a malicious intent to trick the user into clicking the link.

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.ru/pify?keyword=authority+of+information+security+vietnam
    • http://files.northernbeacheshousewash.com/uploads/1/3/2/6/132682230/lazulebumox.pdf
    • http://junitet.friscotxfencing.com/uploads/1/3/0/8/130874575/1214522.pdf
    • http://files.rocwrites.com/uploads/1/3/0/7/130740586/lagibolufov_tibovebi_kikerute.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mapitawaluzosamorexub.pdf
    • https://cdn.shopify.com/s/files/1/0437/8548/6485/files/international_migration_report_2018_un.pdf
    • https://cdn.shopify.com/s/files/1/0429/9613/8137/files/54838098024.pdf
    • https://cdn.shopify.com/s/files/1/0430/0685/3269/files/business_school_books.pdf
    • https://cdn.shopify.com/s/files/1/0434/8103/9013/files/mirumebolanixajefavamex.pdf
    • https://cdn.shopify.com/s/files/1/0433/3279/6574/files/libro_de_absentismo_laboral.pdf
    • https://cdn.shopify.com/s/files/1/0436/1807/4786/files/camisa_do_flamengo_2018_3_uniforme.pdf
    • https://cdn.shopify.com/s/files/1/0433/4957/3784/files/gemineni.pdf
    • https://cdn.shopify.com/s/files/1/0438/0898/1153/files/79722617227.pdf
    • https://cdn.shopify.com/s/files/1/0430/2834/9085/files/63602015581.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_off0000892f.bin
dbd2414ad0988fe15c36ad181aabfb0356c5fe9aeb57453117f28162f7b2adf5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x892F 5240 bytes
font_01_sfnt_off00009ae2.bin
8e268749678de30ca63d344e9d288647090530bf8d946129ebf9140e715ca2bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AE2 10872 bytes

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