Malicious PDF — malware analysis report

Static analysis result for SHA-256 25d1de42e67017dd…

MALICIOUS

PDF

45.9 KB Created: 2020-08-20 03:43:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a870f7ed211456beab3146c43d87a3f SHA-1: 5f15f52d87767c4b7e66224aac43cefe0a89c180 SHA-256: 25d1de42e67017dd10f35aeb7765438a22aa183c770bea80a0df96019cd25744
120 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with many links pointing to Shopify domains and a primary redirector URL. The document body, though heavily obfuscated, contains the redirector URL and keywords related to email settings, suggesting a lure for phishing or malware delivery. The heuristic firings confirm the presence of malicious redirector links and a link farm designed for SEO manipulation.

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.cc/pify?keyword=aol+email+server+settings+android
    • http://golejura.myradiantbeginnings.com/uploads/1/3/1/4/131483492/9186931.pdf
    • http://pomupax.anmhomedecorandmore.com/uploads/1/3/1/8/131856333/96a5da09d45a94.pdf
    • http://bubejuz.kelliegodfrey.com/uploads/1/3/2/7/132712207/301174.pdf
    • http://files.patriciagodden.com/uploads/1/3/1/4/131483019/5adf2.pdf
    • http://lapeteso.living-towin.com/uploads/1/3/0/9/130969757/1604039.pdf
    • https://cdn.shopify.com/s/files/1/0448/6224/2977/files/kepadija.pdf
    • https://cdn.shopify.com/s/files/1/0437/4714/7925/files/donimipob.pdf
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/is_accounting_an_art.pdf
    • https://cdn.shopify.com/s/files/1/0428/1001/5910/files/kugivozafawabuxex.pdf
    • https://cdn.shopify.com/s/files/1/0432/7243/7913/files/bollywood_sad_song_video_hd.pdf
    • https://cdn.shopify.com/s/files/1/0431/6689/2186/files/content_manager_role_sql_server_reporting_services.pdf
    • https://cdn.shopify.com/s/files/1/0441/3086/1208/files/pathfinder_ultimate_wilderness.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wogol.pdf
    • https://cdn.shopify.com/s/files/1/0439/3569/5016/files/8986714154.pdf
    • https://cdn.shopify.com/s/files/1/0432/9770/2046/files/62696292279.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006133.bin
f87e4b9a7b4b1b4c23bebcf7a738d0118636807b1bc8a2397a64f03e62e3700b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6133 5196 bytes
font_01_sfnt_off000072c4.bin
07804b2cf77fdadc1a0af5649352d6c74b1bac56f9d4e6291f95832584446b80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72C4 10120 bytes
font_02_sfnt_off000095a2.bin
2727b978b38a50f39ad898ebf475f8e8b5e599e3ec01ea6686db683a475b2ff9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95A2 16088 bytes

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