Malicious PDF — malware analysis report

Static analysis result for SHA-256 4661758e1ae4c27e…

MALICIOUS

PDF

42.1 KB Created: 2020-07-31 10:23:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 802fe7df5fbd740cda0aea35f6f400ce SHA-1: a1ccc121807274a5deac543458e759e4cbb250dd SHA-256: 4661758e1ae4c27ed3bd3513125b167d3874fbe4fa6987482635bbf21a5c0880
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. This indicates the document is designed to redirect users to potentially harmful websites. Additionally, a PDF link farm heuristic was triggered, suggesting the document is part of a larger SEO manipulation or link distribution scheme. The embedded URL is likely intended to be clicked by the user, leading them to the malicious redirector.

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=electronic+devices+and+circuit+theory+by+j.+b+gupta+pdf
    • http://files.jpactm.org/uploads/1/3/0/7/130739558/956628.pdf
    • http://files.manalily.com/uploads/1/3/1/4/131409244/jinezobozemiz.pdf
    • http://files.oaklandriversidegolfcourse.com/uploads/1/3/2/6/132680901/lonisejaviwaleloba.pdf
    • http://files.oaklandriversidegolfcourse.com/uploads/1
    • https://cdn.shopify.com/s/files/1/0431/0233/9232/files/jewitapadabojabugifaj.pdf
    • https://cdn.shopify.com/s/files/1/0429/9109/1875/files/71967422385.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31906594002.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/ramiput.pdf
    • https://cdn.shopify.com/s/files/1/0440/1207/7206/files/52442968832.pdf
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/43413473786.pdf
    • https://cdn.shopify.com/s/files/1/0432/2482/6014/files/51159265838.pdf
    • https://cdn.shopify.com/s/files/1/0429/5163/9196/files/podokif.pdf
    • https://cdn.shopify.com/s/files/1/0432/1535/6067/files/99842606233.pdf
    • https://cdn.shopify.com/s/files/1/0429/2539/2035/files/37687633275.pdf
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/vurujavuneju.pdf
    • https://cdn.shopify.com/s/files/1/0429/1536/5020/files/fepenuzi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84005007378.pdf
    • https://cdn.shopify.com/s/files/1/0433/4521/5637/files/pugapuf.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_off000064fe.bin
c33495440d56373dc6936ca89ea49ef2f2e129c51c6f1455b95e4a543b543ffc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64FE 5668 bytes
font_01_sfnt_off0000784c.bin
4bff22ec6f29a7e6c7d2f2e2f54fae9299480f0bcefe494f8e8257077f4b015f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x784C 10120 bytes

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