Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae47249ef8c78717…

MALICIOUS

PDF

77.0 KB Created: 2020-09-03 05:57:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a6e222fb53ce8326f05a30d5ce38b619 SHA-1: 69fc6c37a8727ee88f1ce635bfbe7cf1b0878f93 SHA-256: ae47249ef8c78717db06b09a40c533ee8b7185f5c32b3d945f6e3fdadc9f34a9
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download button, intended to lure the user to a malicious site. The document body contains obfuscated text and a URL that appears to be part of a link farm, further supporting the malicious intent. The primary malicious IOC is the redirector URL.

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.club/pify?keyword=asphalt+8+airborne+offline
    • https://cdn.shopify.com/s/files/1/0464/5971/5752/files/34021608691.pdf
    • https://cdn.shopify.com/s/files/1/0436/6021/4425/files/inkscape_export_as_svg.pdf
    • https://cdn.shopify.com/s/files/1/0435/5840/4245/files/kugusukipamawan.pdf
    • https://static.usrfiles.com/ugd/9421c8_1bb27d3f1d644eb298fc2abcb3f12107.pdf
    • https://static.usrfiles.com/ugd/353d00_465d0526ccae443289f4bcfb50ba2396.pdf
    • https://static.usrfiles.com/ugd/3402b1_9f20193d493045378b8217809c56e676.pdf
    • https://static.usrfiles.com/ugd/e3ff21_651ab4bfcdc44d6399f79a372ac4299f.pdf
    • https://static.usrfiles.com/ugd/eed56f_bb416abe75694779aa1507517b848d66.pdf
    • https://static.usrfiles.com/ugd/b8c837_c7dff08cdc934edf9583b34df90f6ec4.pdf
    • https://static.usrfiles.com/ugd/85c99c_c3ab66e5e04d4fab87f2f7dd8e8942d1.pdf
    • https://static.usrfiles.com/ugd/76de1a_de4c478c8c834aa0beaac89aab9213bc.pdf
    • https://static.usrfiles.com/ugd/d162e3_4e4a1c5a39ca4b95803a1398f547e739.pdf
    • https://static.usrfiles.com/ugd/510691_34939f3ea48d4f5f945194b07beada92.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_off0000d590.bin
a216d0d2df90b7fe174427c09ef2bce654ec652bb823958fdd3a0ee40be8cb34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD590 5100 bytes
font_01_sfnt_off0000e6c8.bin
a8a58f381400c0725c8419b8c987c950c2eb07508600141595591bfcd3475e74		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C8 16628 bytes
font_02_sfnt_off000118f8.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x118F8 4324 bytes

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