Malicious PDF — malware analysis report

Static analysis result for SHA-256 4abcb69745fbc462…

MALICIOUS

PDF

39.9 KB Created: 2020-08-31 22:22:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68fff4bad1ae89aaf2a4ccaf92dd7849 SHA-1: 1e4df752491e74069a7f85ea57da768daab2ebf8 SHA-256: 4abcb69745fbc4628e6d3e7055b63d05229876c38d5a66e3dbf00eb9acf54b51
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, disguised as a training attendance record template. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates the primary URL is part of a known malicious redirector infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a large number of embedded links, likely for SEO manipulation or to host further malicious content.

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.club/wix?keyword=training+attendance+record+template
    • https://static.usrfiles.com/ugd/e3834b_a5de574e0bd84cb29960aee3bb4960cd.pdf
    • https://static.usrfiles.com/ugd/b8c837_b9b934b093f84594a9050bd36f476a63.pdf
    • https://static.usrfiles.com/ugd/07625c_e5f7b4bdfb694eeca6a229059817ec85.pdf
    • https://static.usrfiles.com/ugd/353d00_ecf4ba1b6863434c89dd7b35c69e0bc1.pdf
    • https://static.usrfiles.com/ugd/b8c837_b64d46ce3954450886785b334430eb50.pdf
    • https://static.usrfiles.com/ugd/b8c837_7f4278d71d22471597b283dbeea6eddd.pdf
    • https://static.usrfiles.com/ugd/b8c837_97bb5a741a0e419a82bba4f1c117ca3a.pdf
    • https://cdn.shopify.com/s/files/1/0456/4857/6679/files/aashiqui_2_songs_all_remix.pdf
    • https://cdn.shopify.com/s/files/1/0434/8071/1325/files/bluestacks_without_admin_rights.pdf
    • https://cdn.shopify.com/s/files/1/0435/1485/5583/files/atomic_structure_class_9_icse.pdf
    • https://cdn.shopify.com/s/files/1/0429/6045/3785/files/formal_short_dress_patterns_2018.pdf
    • https://cdn.shopify.com/s/files/1/0437/0484/4442/files/kuxalijavafule.pdf
    • https://cdn.shopify.com/s/files/1/0430/2854/5693/files/78124899700.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_off00005fed.bin
96bb4e43a8b101e07d8ba7e62d620fea922358197f3f70ca35137afaa7158b47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FED 5164 bytes
font_01_sfnt_off00007168.bin
1d40fb624925eb0b43454568e6a2384b96d464d58acc6c4c3ab00a781f9175c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7168 9852 bytes

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