Malicious PDF — malware analysis report

Static analysis result for SHA-256 439828520cea87ce…

MALICIOUS

PDF

38.4 KB Created: 2020-07-11 04:21:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ce41dbaf0fcbf6bc4f21ff4515cc624 SHA-1: 82b719dd14d5ec9347290161669e5333106bfd12 SHA-256: 439828520cea87ce229295b70ca06dba006cb22826b0eacfd7c81a0af267672a
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to redirector infrastructure like https://ttraff.com/pify?keyword=pop+design+booklet+pdf. These links are designed to obscure the final destination, which is likely malicious. The document body, though heavily obfuscated, also contains URLs that appear to be part of a link farm, further supporting the malicious redirector hypothesis.

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.com/pify?keyword=pop+design+booklet+pdf
    • http://files.maryamkdesignsai.com/uploads/1/3/0/8/130813923/kuguf_rewujasupobuzam_vopowivi_loxuk.pdf
    • http://files.hsc3knives.com/uploads/1/3/0/9/130969243/a00465f049b.pdf
    • http://files.breiterplanet.com/uploads/1/3/1/4/131437648/27872d6dc3e.pdf
    • http://files.companionsofchrist.org/uploads/1/3/0/9/130969375/3234800.pdf
    • http://files.chefleslieann.com/uploads/1/3/1/3/131379039/vuxijeb.pdf
    • http://files.hideshackman.com/uploads/1/3/1/4/131408068/tudatumoku.pdf
    • http://files.ldowingslaw.com/uploads/1/3/0/7/130775982/zajedapepag.pdf
    • http://files.limassolsportsmassage.com/uploads/1/3/0/8/130874129/laxuvovobopekidom.pdf
    • http://files.advfit.com/uploads/1/3/0/7/130776370/1d26b300.pdf
    • http://files.annpopepotter.com/uploads/1/3/1/3/131383733/724557.pdf
    • https://kibufolawof.files.wordpress.com/2020/06/werujarixa.pdf
    • https://zodamutove.files.wordpress.com/2020/06/nonozunudavojaposeletu.pdf
    • https://wapulegumun.files.wordpress.com/2020/07/76072185088.pdf
    • https://cdn.shopify.com/s/files/1/0432/5310/4790/files/nividox.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dijupabexapuvasazanuripik.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vibamiwa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13170590630.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_off00005ad7.bin
11ce71dec3cdde9205aaf9e672d57d6a41b468c65040790c9301f6c6d21706de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AD7 4896 bytes
font_01_sfnt_off00006b8f.bin
78d5b2587ccf03a88aceb0f9914ab8f2a4fc3edaaae7e07fc273b43c8d0a76ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B8F 9696 bytes

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