Malicious PDF — malware analysis report

Static analysis result for SHA-256 acff085c97782734…

MALICIOUS

PDF

44.2 KB Created: 2020-08-22 22:10:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ec358e0e8b68e0e8c059522140fc4778 SHA-1: 6ad9ab65cd0e4387395762c1e41e1055c7c24478 SHA-256: acff085c97782734807dd4ad43b4e03cb7a38b49e92c8a1122aa91fb4f69efcb
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.001 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is also present in the document body. The document also exhibits a 'Browser extension / update installation lure' heuristic, suggesting social engineering to trick the user into installing malicious software. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to improve search engine ranking for malicious content.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/pify?keyword=android+whatsapp+notification
    • http://files.johnthomsbehaviormethod.com/uploads/1/3/1/3/131379718/705ee1d709.pdf
    • http://files.ekubcm.org/uploads/1/3/1/6/131636725/tijipafar.pdf
    • http://tonow.oldschoolsailing.com/uploads/1/3/1/6/131606295/zonijitekojo_xasonitamet_gilapuzenilekev_muraf.pdf
    • http://files.wolffundraising.org/uploads/1/3/1/4/131453022/384f2.pdf
    • http://files.cupenames.com/uploads/1/3/2/6/132681156/lutibeb.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tufajotojitumawudawemir.pdf
    • https://cdn.shopify.com/s/files/1/0433/6533/5190/files/relationship_between_marketing_advertising_and_public_relations.pdf
    • https://cdn.shopify.com/s/files/1/0433/6163/2406/files/census_report_2020_kerala.pdf
    • https://cdn.shopify.com/s/files/1/0430/8706/9348/files/givexudogakilileruzokope.pdf
    • https://cdn.shopify.com/s/files/1/0434/2149/9548/files/dls_2019_uefa_champions_league_edition_apk.pdf
    • https://cdn.shopify.com/s/files/1/0429/9417/2058/files/65651876830.pdf
    • https://cdn.shopify.com/s/files/1/0466/2545/6293/files/tubigobiludot.pdf
    • https://cdn.shopify.com/s/files/1/0428/7594/5113/files/86677615422.pdf
    • https://cdn.shopify.com/s/files/1/0428/5317/1356/files/3796696719.pdf
    • https://cdn.shopify.com/s/files/1/0436/3950/5056/files/pre_algebra_math_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0433/9875/8567/files/12663227243.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_off00006e57.bin
8e11a9e12c687df24466bf99fc03b957ca4b10f0d8ab9dfee6852363cb1ba7c8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E57 5292 bytes
font_01_sfnt_off0000805d.bin
02563a403af919c35e3fcee05f23fa44da6b2c738dcb36ecfcf5809aba81c635
pdf-font-stream PDF embedded font (sfnt) at offset 0x805D 10288 bytes