Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2592c5caf9ebf3c…

MALICIOUS

PDF

57.3 KB Created: 2020-08-09 23:06:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 744c646a439aa01447c6ae1da460c9c3 SHA-1: 90bef03d535889d65e045cd431c62f84581fea2c SHA-256: e2592c5caf9ebf3cb5c6a786f0bf6acc5f784ca35c084d1208fa2f5b2d6220be
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, masquerading as a piano sheet music download. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the redirection to known malicious infrastructure. The document body, though heavily obfuscated, contains the target URL and references to 'wkhtmltopdf', suggesting it was generated by a tool. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, common in phishing or spam campaigns.

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=pirates+of+the+caribbean+theme+easy+piano+pdf
    • http://files.hazelcirclelenses.com/uploads/1/3/1/8/131871902/218e4a483978b4.pdf
    • http://kerizati.lenreed.com/uploads/1/3/1/0/131070374/rurezulajeserivoriw.pdf
    • http://files.fermentedteacompany.com/uploads/1/3/1/8/131872178/d8458836b2.pdf
    • https://cdn.shopify.com/s/files/1/0431/8003/2160/files/zinowumeditumota.pdf
    • https://cdn.shopify.com/s/files/1/0430/5390/8117/files/possessive_nouns_worksheets_6th_grade.pdf
    • https://cdn.shopify.com/s/files/1/0433/5036/0232/files/steiner_230_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/7826/2689/files/7870523109.pdf
    • https://cdn.shopify.com/s/files/1/0437/4999/8743/files/beginner_java_for_dummies.pdf
    • https://cdn.shopify.com/s/files/1/0432/2436/7266/files/15071387557.pdf
    • https://cdn.shopify.com/s/files/1/0432/3042/9346/files/bakibupa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27039997465.pdf
    • https://cdn.shopify.com/s/files/1/0432/5212/1762/files/postal_exam_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/4189/0209/files/.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_off00008db3.bin
c3dd73a9ab25b98bb046f38c7743eca390e13cefab38735619906ebfc3f297ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DB3 4540 bytes
font_01_sfnt_off00009d6f.bin
6752ddc4b1bfd2dbd4cb00d5d7ffb3dcaa0d2d71b8fafd59eebda03346b4ff8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D6F 5604 bytes
font_02_sfnt_off0000b051.bin
3261cb4fae931e7dd2f3c5b19938cb61241714d589856eaba76a778a4aa44b11		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB051 11632 bytes

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