Malicious PDF — malware analysis report

Static analysis result for SHA-256 df6f98963197dc75…

MALICIOUS

PDF

39.3 KB Created: 2020-08-31 18:06:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03d91791818909710a30034714df2015 SHA-1: 6315276d587fb46bdbdba0c3b81cf75c0b62793a SHA-256: df6f98963197dc75399aa32e807756f948e050ac6f31aa0d0ea3d76f9b4f7f5d
150 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text referencing 'Deloitte digital transformation video' and the malicious URL, suggesting a social engineering lure. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, many of which are hosted on cdn.shopify.com, likely to obscure the malicious redirector.

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.cc/wix?keyword=deloitte+digital+transformation+video
    • https://cdn.shopify.com/s/files/1/0431/6289/4498/files/50_shades_of_grey_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wanojexabe.pdf
    • https://cdn.shopify.com/s/files/1/0432/7522/3200/files/89589926875.pdf
    • https://cdn.shopify.com/s/files/1/0431/2373/6725/files/53478677183.pdf
    • https://cdn.shopify.com/s/files/1/0432/0631/2093/files/army_counseling_magic_bullet.pdf
    • https://cdn.shopify.com/s/files/1/0429/2490/0515/files/58026900709.pdf
    • https://cdn.shopify.com/s/files/1/0429/9282/8579/files/repalegun.pdf
    • https://cdn.shopify.com/s/files/1/0430/3139/6501/files/95393275447.pdf
    • https://cdn.shopify.com/s/files/1/0437/1821/3797/files/materiales_ceramicos_en_la_construccion.pdf
    • https://static.usrfiles.com/ugd/10e3af_4c8c5d19be454d33ae88f5947826bc60.pdf
    • https://static.usrfiles.com/ugd/33a16d_aab0017fb0754e1ab8857426e57d21ce.pdf
    • https://static.usrfiles.com/ugd/625844_0d8e043da74844489e90e8282056497c.pdf
    • https://cdn.shopify.com/s/files/1/0435/3681/0135/files/indesign_fillable_form_template.pdf
    • https://cdn.shopify.com/s/files/1/0430/7956/5465/files/60755849683.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_off00005c06.bin
7c6c5d3fcb1a958a28475f627f38a7178df01fce995edc8c0d8f79b1d811f80b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C06 5284 bytes
font_01_sfnt_off00006df6.bin
3a0499f0cf9f5aef967c65959c1bddd2267052ee7179adcde8a651e9bcaa57c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF6 10124 bytes

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