Malicious PDF — malware analysis report

Static analysis result for SHA-256 d19563f2ba5bb513…

MALICIOUS

PDF

46.2 KB Created: 2020-07-13 02:14:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a87112335d2266cb7cc5896b69d3ad6 SHA-1: 1e2d4c630052ae872ba6bbc10205bfe4a96e1ad8 SHA-256: d19563f2ba5bb5136854e90a5e02fbedad29a10e2c589f3959be2d63aad90c63
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic suggests a social engineering lure to trick the user into clicking the malicious link. No scripts were extracted from this sample.

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/wb?keyword=uworld%20step%201%20pdf%20google%20drive
    • http://files.stampgeneral.com/uploads/1/3/1/4/131483371/9747911.pdf
    • http://files.globalisationandcities.com/uploads/1/3/1/6/131607174/jilaxafufusekiw.pdf
    • http://files.thegoldharvestmusic.com/uploads/1/3/1/0/131070485/5265086.pdf
    • http://files.bethanysanderson.com/uploads/1/3/1/4/131482946/ginoxaron.pdf
    • http://files.natashasteer.com/uploads/1/3/1/4/131437953/6248808.pdf
    • https://kinifevo.files.wordpress.com/2020/07/marikinib.pdf
    • https://ramuguda.files.wordpress.com/2020/07/xabemaguguwozewax.pdf
    • https://rofatekarem.files.wordpress.com/2020/07/29560688892.pdf
    • https://xukudegexe.files.wordpress.com/2020/07/10798532215.pdf
    • https://xuxosasi.files.wordpress.com/2020/07/liluj.pdf
    • https://vasotox.files.wordpress.com/2020/07/6547550376.pdf
    • https://juxisaw.files.wordpress.com/2020/07/mifusowuwezezavi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73768917897.pdf
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/fepamome.pdf
    • https://cdn.shopify.com/s/files/1/0430/1714/2433/files/14295775781.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejupabofutub.pdf
    • https://cdn.shopify.com/s/files/1/0431/9775/9643/files/20236316508.pdf
    • https://cdn.shopify.com/s/files/1/0430/3932/6365/files/8290094113.pdf
    • https://cdn.shopify.com/s/files/1/0431/2226/2178/files/sivunobabozak.pdf
    • https://cdn.shopify.com/s/files/1/0432/8721/6293/files/11939983107.pdf
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/65208271037.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_off00006210.bin
82ecfdf02a2fb1b6c1d37892b1d9a284f3251a4ddb7c8aaae09da885915d8898		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6210 4876 bytes
font_01_sfnt_off000072e4.bin
aeba7a20c463315686ca1a52dc3bf499ffc841db3e70b20d643b126e7444dff5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72E4 10116 bytes
font_02_sfnt_off000095b4.bin
3881ac036e24d18d946d46924f2e53d0ed0d4a9afaeaebdb2d2c90068baec180		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95B4 16240 bytes

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