Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e70f9167bf8425f…

MALICIOUS

PDF

40.8 KB Created: 2020-08-31 14:06:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d7def0772000aac4448e60ebd92ccf5c SHA-1: db98612969da974953303eb82705afc84f616cb9 SHA-256: 7e70f9167bf8425f1db75efbc09fe9b387248027ed3102c49d96a9902f0d5200
128 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the redirector link. This indicates the document's primary purpose is to lure the user to a malicious site via a deceptive link, likely for phishing or malware delivery.

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/wix?keyword=cardioline+ar600view+manuale+d%2527+uso
    • https://cdn.shopify.com/s/files/1/0435/2920/7957/files/assinar_com_certificado_digital_serasa.pdf
    • https://cdn.shopify.com/s/files/1/0451/0554/5369/files/wibud.pdf
    • https://cdn.shopify.com/s/files/1/0464/9435/1512/files/pineapple_chicken_fajitas_sheet_pan.pdf
    • https://cdn.shopify.com/s/files/1/0439/5089/9368/files/notafudutufenamerafajexi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8549/6482/files/ludobukadufeped.pdf
    • https://static.usrfiles.com/ugd/253000_a9f9a693cfd04b3a842bb38011870c88.pdf
    • https://static.usrfiles.com/ugd/b8c837_51de7105e05e4e798e6da468956b3eb4.pdf
    • https://static.usrfiles.com/ugd/82e28d_d25964d72ae643fe87671c801a29c7a9.pdf
    • https://cdn.shopify.com/s/files/1/0430/4008/0025/files/fabukedipoxuzij.pdf
    • https://cdn.shopify.com/s/files/1/0429/2729/2582/files/lidezirowojotejokosul.pdf
    • https://cdn.shopify.com/s/files/1/0435/3415/5928/files/android_emulator_for_pc_android_6._0.pdf
    • https://static.usrfiles.com/ugd/837d34_9ce29b38b6b64fc08e99af97c85f58e9.pdf
    • https://static.usrfiles.com/ugd/b58d21_8ccc307c6d6e467781e4b20f5b1e3083.pdf
    • https://static.usrfiles.com/ugd/b8c837_665cf2c14ae843bfb5d9ccd3087f63af.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_off000062a3.bin
3125837abd965ed89afaa83503dd078182de180ac5b5f7ba101b1ccd3d5327b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62A3 5360 bytes
font_01_sfnt_off000074d6.bin
a4b0d2188499411a5b92643acc46387a6146194c41064f0c41cb5ecce7641dc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74D6 9652 bytes

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