Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb1dd63af364a820…

MALICIOUS

PDF

41.5 KB Created: 2020-08-14 06:42:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 635404a42532189271fb02b6de39d864 SHA-1: cb1c7ca662c55a252dd77d8b447ab2e33b277db1 SHA-256: bb1dd63af364a82014f3bd75d38eacb31a26bb8bae05c80de37d10d9c0028934
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of these links, 'https://ttraff.cc/pify?keyword=google+account+manager+for+android+9', is identified as a malicious redirector. The document body, though heavily obfuscated, contains text referencing 'Google account manager for android 9', suggesting a lure to trick users into clicking the malicious link. No scripts were extracted from this sample.

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=google+account+manager+for+android+9
    • http://keziges.skylynart.com/uploads/1/3/0/8/130814328/fujinipu.pdf
    • http://xikixenez.bryansamuelphotographs.com/uploads/1/3/1/8/131857114/ridudinozujixap_togane.pdf
    • http://files.tylerroommakeovers.com/uploads/1/3/1/1/131164460/3785259.pdf
    • http://files.severnwildlifecarvers.net/uploads/1/3/0/8/130874394/gasanonozosowal.pdf
    • https://cdn.shopify.com/s/files/1/0428/3770/4867/files/litifudivumabog.pdf
    • https://cdn.shopify.com/s/files/1/0432/8731/4585/files/xadadavevinuxex.pdf
    • https://cdn.shopify.com/s/files/1/0433/3902/2485/files/6804719772.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/35535883354.pdf
    • https://cdn.shopify.com/s/files/1/0427/8996/1884/files/kekeguso.pdf
    • https://cdn.shopify.com/s/files/1/0434/6616/2341/files/39122607378.pdf
    • https://cdn.shopify.com/s/files/1/0433/8266/9461/files/78074282277.pdf
    • https://cdn.shopify.com/s/files/1/0438/2208/8354/files/56881890235.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/bring_it_on_home_to_me_tab.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/16219475651.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_off000063dd.bin
7833088f59e508de4cbd6ef603392b80ac184cdd48702e41380f3496afc28eb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63DD 5348 bytes
font_01_sfnt_off000075fa.bin
8adf3a7ef20f6edc5e9eb7e728ac81d5bb3fa6a6322bbdaf91378d9bdfe33c99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75FA 10364 bytes

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