Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b0d1b48370bbe69…

MALICIOUS

PDF

47.7 KB Created: 2020-08-12 10:48:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3cc012257ca7240428626989c442f1f2 SHA-1: 2aec4e114a86f72fdbba9da11c1418d0e0261225 SHA-256: 9b0d1b48370bbe69c3fdd0ef60975f53a3e3ca39e824f5ec9cee2b7a1afa0095
160 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, disguised as a manual for a Polycom conference phone. It also functions as a link farm, pointing to numerous other PDFs hosted on Shopify and other domains. The presence of a 'Password-protected archive lure' heuristic suggests the document may be intended to trick the user into downloading a password-protected archive, likely containing a secondary payload.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/wb?keyword=polycom%20realpresence%20trio%208800%20ip%20conference%20phone%20manual
    • http://files.mskhor.com/uploads/1/3/0/8/130874115/8905502.pdf
    • http://files.catholiclaporte.org/uploads/1/3/0/7/130738974/sovaw-zojoxafum.pdf
    • http://files.rammothdm.org/uploads/1/3/1/4/131438583/vupuxitebewij.pdf
    • http://nixum.homesweethomemarch.co.uk/uploads/1/3/2/6/132681579/4827219.pdf
    • http://files.pmeshelleygreenwood.com/uploads/1/3/1/8/131856166/dodedot_dojem_kewetejuzonaxoz_luvogegoto.pdf
    • https://cdn.shopify.com/s/files/1/0431/9094/3902/files/39548122698.pdf
    • https://cdn.shopify.com/s/files/1/0432/6978/3720/files/58965536317.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nomevorijodasulalo.pdf
    • https://cdn.shopify.com/s/files/1/0428/3075/8054/files/19637502743.pdf
    • https://cdn.shopify.com/s/files/1/0435/3877/6223/files/lasko_heater_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/3642/5883/files/favafar.pdf
    • https://cdn.shopify.com/s/files/1/0439/4136/3870/files/bengali_book_file_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/6723/5742/files/journal_carbohydrate_chemistry.pdf
    • https://cdn.shopify.com/s/files/1/0437/6523/5866/files/php_password_protect_pages.pdf
    • https://cdn.shopify.com/s/files/1/0435/4031/6311/files/68345625525.pdf
    • https://cdn.shopify.com/s/files/1/0434/9929/0776/files/97357177676.pdf
    • https://cdn.shopify.com/s/files/1/0435/6459/7397/files/amino_acids_classification.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_off000070ab.bin
ac7d5d31626855d2c8d49ac0dc7ce004c0bdcde6b7ba64c174d01139bbdc58bd
pdf-font-stream PDF embedded font (sfnt) at offset 0x70AB 5696 bytes
font_01_sfnt_off000083df.bin
abb7b0aadf3e95c900510b2b713270304984b7af72dfb3271a3183dac845aeee
pdf-font-stream PDF embedded font (sfnt) at offset 0x83DF 14472 bytes