Malicious PDF — malware analysis report

Static analysis result for SHA-256 82dbba2866f66187…

MALICIOUS

PDF

41.8 KB Created: 2020-08-08 07:33:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9df05a940d34b1922c2a4971dd49777d SHA-1: 657eca6fdf27c330c98fb09e13a2830386063f4e SHA-256: 82dbba2866f661877fb8bbd533ea22d8d29e94c44804cb6003abec8408414ca8
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to traff.com. The document body, though heavily obfuscated, contains the same URL and appears to be a lure related to 'Ensayo de alimentos transgenicos pdf'. The ML classifier also strongly flagged this PDF as malicious. The presence of numerous external links, many hosted on Shopify, suggests a link farm or content distribution network used to host malicious documents. The primary intent appears to be redirecting the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=ensayo+de+alimentos+transgenicos+pdf
    • http://files.surplus-lighting.com/uploads/1/3/1/4/131453657/6dcfb53.pdf
    • http://files.oogeu.com/uploads/1/3/1/1/131164250/9350808.pdf
    • http://files.natashasteer.com/uploads/1/3/1/4/131437953/6248808.pdf
    • https://cdn.shopify.com/s/files/1/0436/6719/4021/files/48180968647.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/11411440246.pdf
    • https://cdn.shopify.com/s/files/1/0428/6673/7311/files/zisebadebe.pdf
    • https://cdn.shopify.com/s/files/1/0432/6142/7867/files/30540481048.pdf
    • https://cdn.shopify.com/s/files/1/0432/9232/8104/files/8321013720.pdf
    • https://cdn.shopify.com/s/files/1/0431/2363/8426/files/xojiv.pdf
    • https://cdn.shopify.com/s/files/1/0433/2175/3758/files/34270466903.pdf
    • https://cdn.shopify.com/s/files/1/0433/4151/2855/files/libexofumikapukasamu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1708/4839/files/1012066414.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kupenase.pdf
    • https://cdn.shopify.com/s/files/1/0437/4809/8209/files/wilhelm_scream_mp3.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_off0000617d.bin
b91195db6e227139ba87648ea0c45ad4d624ab3514db9f7a419aea786ad237d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x617D 5532 bytes
font_01_sfnt_off0000744d.bin
2a5812c0d017320cbc12b0175ca4ef86f79541e035951e6cb3b0e7a636fc927f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x744D 11172 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.