Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee28c40aceb6bd40…

MALICIOUS

PDF

97.8 KB Created: 2020-08-30 02:16:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d4c70847dfdcaf9443e0c96f1586d25 SHA-1: 1561144fe9463f0ed1d6e9cd7aa1f4011fe5f99c SHA-256: ee28c40aceb6bd40c1ac898ff6325fbb410228476add339e07a2722c0f72d958
120 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.com'. This URL is presented within the document body, disguised as a Kubota service manual. The PDF also contains a large number of external links, many hosted on Shopify, which is flagged as a link farm. The primary malicious IOC is the redirector URL.

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.com/wix?keyword=kubota+rtv+1100+service+manual
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/birizakidunupujudexi.pdf
    • https://cdn.shopify.com/s/files/1/0434/2795/4840/files/install_exodus_on_kodi.pdf
    • https://cdn.shopify.com/s/files/1/0437/5055/5799/files/configurer_boite_mail_icloud_sur_android.pdf
    • https://cdn.shopify.com/s/files/1/0439/3140/2395/files/leave_application_form_ms_word.pdf
    • https://cdn.shopify.com/s/files/1/0434/2670/9665/files/psychology_questions_and_answers_in_tamil_download.pdf
    • https://static.usrfiles.com/ugd/429b25_e878468284a340658a832e122f1e2aa8.pdf
    • https://static.usrfiles.com/ugd/b8c837_b045058898184f6b8774cabba4cb35ba.pdf
    • https://static.usrfiles.com/ugd/3b0c81_60291ef39cc74b32bd77821370acd12b.pdf
    • https://static.usrfiles.com/ugd/b8c837_2977d4f4b08f41228e7cb93640987667.pdf
    • https://static.usrfiles.com/ugd/81d6a4_6a4598b7eed741f3a2b5f2bfdc88bccf.pdf
    • https://cdn.shopify.com/s/files/1/0428/6968/6431/files/katepilodezoxenurivelolaw.pdf
    • https://cdn.shopify.com/s/files/1/0447/0826/6137/files/aranyakam_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0437/5930/4858/files/remit_lanier_parking.pdf
    • https://cdn.shopify.com/s/files/1/0434/8890/3325/files/42972290823.pdf
    • https://cdn.shopify.com/s/files/1/0432/9108/2918/files/fonefotugurowinigerape.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mavadusuwavofemikedoj.pdf
    • https://cdn.shopify.com/s/files/1/0435/7000/4126/files/sownik_obrazkowy_polski_angielski.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/
    • https://cdn.shopify.com/s/files/1/0434/8890/332

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011e73.bin
d55202f5a9d113633e3746f931d4f0470dafbf6395b4f3878f3a4d1b4c991a29
pdf-font-stream PDF embedded font (sfnt) at offset 0x11E73 5308 bytes
font_01_sfnt_off00013077.bin
7dfbefd22e7e8091e01cbe35e182040dcc69c46facbd2a6d90ceec25106b6caf
pdf-font-stream PDF embedded font (sfnt) at offset 0x13077 16612 bytes
font_02_sfnt_off000163d7.bin
ab863045029e1d089b87637d3ab1e828d383e3aa55e2d06b858a1b8712582895
pdf-font-stream PDF embedded font (sfnt) at offset 0x163D7 16360 bytes