Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ecdcbe7c9b5b488…

MALICIOUS

PDF

49.4 KB Created: 2020-08-30 04:31:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5dba05edb3514c18ecf4b7f9072da234 SHA-1: 445567aa325945dd59952109cd71447743905c35 SHA-256: 1ecdcbe7c9b5b4884569f5269ae2244f8df6d61329c4424397fe280fd50804a0
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. Additionally, it exhibits a PDF link farm heuristic, suggesting an attempt to distribute malicious content. The presence of a 'download button' lure further supports the malicious intent.

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=generic+non-pnp+monitor+on+standard+vga+graphics+adapter+windows+7
    • https://cdn.shopify.com/s/files/1/0438/3178/7670/files/72376669025.pdf
    • https://cdn.shopify.com/s/files/1/0431/8186/7176/files/motub.pdf
    • https://cdn.shopify.com/s/files/1/0450/8450/8325/files/print_to_add_on_internet_explorer.pdf
    • https://cdn.shopify.com/s/files/1/0432/4553/5400/files/xevomugot.pdf
    • https://static.usrfiles.com/ugd/79e5df_73fe5931cc424cb5b997b5411b2ec424.pdf
    • https://static.usrfiles.com/ugd/db1da1_0052e449e607434e800db164ffb27960.pdf
    • https://static.usrfiles.com/ugd/e3834b_61321af39f9f4843a5962c26a195283c.pdf
    • https://static.usrfiles.com/ugd/b8c837_ebcd6a8473bc435fba4d9a292a4920cd.pdf
    • https://static.usrfiles.com/ugd/b8c837_97f37fc9c1784e3aadce6cbab6f40feb.pdf
    • https://static.usrfiles.com/ugd/912de2_d027109f84864f99b0096beecf5d9c0a.pdf
    • https://static.usrfiles.com/ugd/cf79db_3989f5c14e0b439fa765a7adc8028a75.pdf
    • https://static.usrfiles.com/ugd/6116da_bdd48268f1b54cb8a188abe2fa42303e.pdf
    • https://static.usrfiles.com/ugd/0aab01_3b7e98cd1bd94714aacba80cb00d3718.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_off00007851.bin
69180f10464906cefabee39e423eb8f477943e76f72bb2a16fee8216d51a34cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7851 5748 bytes
font_01_sfnt_off00008bd5.bin
f2478644ba9f161383c9c46db65565c6b1e56d82f5cf571a43014440e87953a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BD5 14392 bytes

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