Malicious PDF — malware analysis report

Static analysis result for SHA-256 b962f7d5773fcb09…

MALICIOUS

PDF

42.1 KB Created: 2020-08-17 07:29:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 28367dd57b4a22690d468f860dee6070 SHA-1: 8bb9b07071659486028b661893d56e3ab2de794a SHA-256: b962f7d5773fcb0957e13007ebd26c08e472a014e27cc4f100e57295d603376f
130 Risk Score

Malware Insights

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

The PDF contains a link farm with 30 external PDF links, many hosted on cdn.shopify.com, and a critical heuristic firing for a malicious redirector link. The document body also contains a call-to-action phrase and the primary malicious URL, indicating a lure to download potentially malicious content. The presence of a malicious redirector suggests an attempt to obscure the final destination of the download.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/pify?keyword=banished+game+free++for+pc
    • http://files.drbeccasbackyardbiology.com/uploads/1/3/0/9/130968943/kojepegelower.pdf
    • http://files.kaycorcoran.com/uploads/1/3/0/8/130874110/2ac5b4af374.pdf
    • https://cdn.shopify.com/s/files/1/0433/8126/0438/files/jigotawuxikavuta.pdf
    • https://cdn.shopify.com/s/files/1/0430/2418/7549/files/morufufeg.pdf
    • https://cdn.shopify.com/s/files/1/0438/5370/9472/files/edit_nightbot_commands.pdf
    • https://cdn.shopify.com/s/files/1/0430/6350/9146/files/srimad_bhagavatam_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0431/1446/3394/files/51757040399.pdf
    • https://cdn.shopify.com/s/files/1/0429/3319/0823/files/meus_antepassados_anne_ancelin_schutzenberger.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/halogen_derivatives_of_alkanes_and_arenes_notes_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/5354/7677/files/asmaul_husna_dan_terjemahannya.pdf
    • https://cdn.shopify.com/s/files/1/0430/1013/0073/files/kebopufas.pdf
    • https://cdn.shopify.com/s/files/1/0437/0425/4615/files/14867819019.pdf
    • https://cdn.shopify.com/s/files/1/0433/4603/4846/files/ballards_funeral_home_roswell_nm.pdf
    • https://cdn.shopify.com/s/files/1/0429/8289/9871/files/ps3_controller_driver_mac.pdf
    • https://cdn.shopify.com/s/files/1/0431/3802/3581/files/medipudasejusare.pdf
    • https://cdn.shopify.com/s/files/1/0438/2054/8253/files/raxewikifikobax.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_off00006620.bin
04aa9d278251e67afda085c63800e6654c3cfd3ca14072231ce229d2cbdd4559
pdf-font-stream PDF embedded font (sfnt) at offset 0x6620 5588 bytes
font_01_sfnt_off000078ee.bin
ed5dc7b5745797811948d29b4d0756801080c15ecc25222e0707f05ced8d685d
pdf-font-stream PDF embedded font (sfnt) at offset 0x78EE 10240 bytes