Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e260401a3dc3028…

MALICIOUS

PDF

55.2 KB Created: 2020-08-04 07:06:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c46c00a0095eb82371966523347119f SHA-1: d8a2a517be823f34fde21c1da74a082bb2b0e12a SHA-256: 9e260401a3dc3028a988146f3421d214c12d6e7b6e25d96ef5a2a21748188a26
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=cultura+aymara+en+bolivia+pdf'. This URL is likely used to redirect the user to a malicious site. The document also contains a large number of external PDF links, characteristic of a link farm, with many pointing to Shopify domains. The document body, though heavily obfuscated, contains the same redirector URL and several Shopify URLs, reinforcing the lure.

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.cc/pify?keyword=cultura+aymara+en+bolivia+pdf
    • http://files.feelgoodafterfifty.com/uploads/1/3/1/4/131453924/domibilolugur-ripip-jawere-zijimatevuzolu.pdf
    • http://files.paddelboden.com/uploads/1/3/1/3/131384401/89b3a.pdf
    • http://files.kariccohairdesign.com/uploads/1/3/0/7/130774969/f1110.pdf
    • http://files.marvinehowe.com/uploads/1/3/0/7/130775396/gogisosawa.pdf
    • https://cdn.shopify.com/s/files/1/0433/1700/2405/files/lifekikibajenilev.pdf
    • https://cdn.shopify.com/s/files/1/0429/3525/5203/files/cms-_xch._33across._com.pdf
    • https://cdn.shopify.com/s/files/1/0431/7839/3762/files/zorofopumebanikopexiv.pdf
    • https://cdn.shopify.com/s/files/1/0436/9534/1723/files/10422187066.pdf
    • https://cdn.shopify.com/s/files/1/0432/5654/5433/files/xapebup.pdf
    • https://cdn.shopify.com/s/files/1/0431/1865/7697/files/gofunekotofarixase.pdf
    • https://cdn.shopify.com/s/files/1/0432/9639/1323/files/99715804077.pdf
    • https://cdn.shopify.com/s/files/1/0431/1724/8672/files/punuwelujuso.pdf
    • https://cdn.shopify.com/s/files/1/0432/2299/1007/files/graduation_announcements_wording.pdf
    • https://cdn.shopify.com/s/files/1/0435/4244/6231/files/mulewelizagoxuzokug.pdf
    • https://cdn.shopify.com/s/files/1/0431/8828/9694/files/53391376441.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_off00009810.bin
487e3e4889af0a97808269c60eb8c07598efaf214fe43ffd25b0cba63e4fd396		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9810 5216 bytes
font_01_sfnt_off0000a9bf.bin
a689f0a337bda8927d2d9150ddc3815fdb90c403c4ba2c01d47f73d640d40420		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA9BF 11188 bytes

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