Malicious PDF — malware analysis report

Static analysis result for SHA-256 e79ca35ae4d1c8ed…

MALICIOUS

PDF

48.8 KB Created: 2020-08-13 17:23:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57c70f946f7b097f646f869e3615eada SHA-1: 1092e44840ed26829b77834a8e724ba48ef4b386 SHA-256: e79ca35ae4d1c8ed3db16dfb6ee82e1fbaada298cdfab4f101744ddcc1ca29ef
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wb?keyword=12%20unlikely%20heroes%20pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many of which host PDF files. The primary malicious URL is the most significant IOC. No scripts were extracted, limiting the ability to determine specific payload delivery mechanisms beyond the initial 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=12%20unlikely%20heroes%20pdf
    • http://revagevux.nikkileahdesigns.com/uploads/1/3/2/7/132740873/niwirerimojitelu.pdf
    • http://files.chrisandelyse.org/uploads/1/3/0/7/130739169/7323311.pdf
    • http://files.atspringbrookfarms.com/uploads/1/3/1/0/131070712/6043057.pdf
    • http://fedakowu.bajasharkdiving.com/uploads/1/3/1/1/131164250/migejot.pdf
    • http://foguzina.plussizeweddingdressesinmassachusetts.com/uploads/1/3/0/7/130775537/108a64.pdf
    • https://cdn.shopify.com/s/files/1/0436/1807/4786/files/atal_bihari_vajpayee_poems_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/fafetidi.pdf
    • https://cdn.shopify.com/s/files/1/0433/8361/9736/files/vosanebisujod.pdf
    • https://cdn.shopify.com/s/files/1/0432/0188/8416/files/turen.pdf
    • https://cdn.shopify.com/s/files/1/0433/4950/8246/files/annales_chimie_terminale_s.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/surorut.pdf
    • https://cdn.shopify.com/s/files/1/0431/2596/4957/files/anti_corruption_commission_zambia.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/paxotaxazojulilinitulo.pdf
    • https://cdn.shopify.com/s/files/1/0428/2449/9367/files/36346911139.pdf
    • https://cdn.shopify.com/s/files/1/0428/7299/5996/files/rtl-_sdr_raspberry_pi.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/44218104743.pdf
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/nirum.pdf
    • https://cdn.shopify.com/s/files/1/0440/6942/1206/files/arcanos_maiores_do_tarot.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_off00008076.bin
e58435b3d0e457a4db44168d63d3c0d18a76d776c805f28c5db75dcc8f9ad7ce
pdf-font-stream PDF embedded font (sfnt) at offset 0x8076 5176 bytes
font_01_sfnt_off00009214.bin
c0cdb30fedb3f43b505dc16c54ad6bdc22267521db9f7eca1f0c55bc52ed1c59
pdf-font-stream PDF embedded font (sfnt) at offset 0x9214 10724 bytes