Malicious PDF — malware analysis report

Static analysis result for SHA-256 a56236c69b116237…

MALICIOUS

PDF

33.5 KB Created: 2020-08-25 03:04:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a76d0fd2e625a10da8ff3154f9dff8c1 SHA-1: 1483db76426863986fccd0f67528b56f845a4051 SHA-256: a56236c69b116237d7a0f8710ca360307a70727bacacaef9823b0e21e0e30706
150 Risk Score

Malware Insights

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

The PDF contains a link to a redirector URL, which is a common tactic for delivering malicious payloads or phishing pages. The PDF also exhibits characteristics of a link farm, attempting to obscure the malicious intent by embedding numerous links, many pointing to benign Shopify domains. The primary malicious URL identified is https://ttraff.com/pify?keyword=amazing+grace+bagpipes+and+drums+free, which is flagged as a 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.com/pify?keyword=amazing+grace+bagpipes+and+drums+free
    • http://files.greyteakettle.com/uploads/1/3/1/4/131453749/1399889.pdf
    • http://febamu.quietjamaica.com/uploads/1/3/0/7/130776394/2468172.pdf
    • https://cdn.shopify.com/s/files/1/0431/4906/6397/files/tedaxujeneku.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38692385895.pdf
    • https://cdn.shopify.com/s/files/1/0435/5211/2804/files/96571974746.pdf
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/22928745424.pdf
    • https://cdn.shopify.com/s/files/1/0428/0093/9164/files/java_jdk_7_s.pdf
    • https://cdn.shopify.com/s/files/1/0434/1828/8277/files/25190504985.pdf
    • https://cdn.shopify.com/s/files/1/0438/1815/6192/files/zubiginateb.pdf
    • https://cdn.shopify.com/s/files/1/0431/9117/3278/files/pevamabi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gekisemegudifusoledo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5425/1670/files/21790449598.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/biology_o_level_syllabus.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_off000045e7.bin
d2913d3a59557cd2255e6f1985997c9ab0a2db317783099135948da8a307240e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45E7 5620 bytes
font_01_sfnt_off000058e0.bin
37a39098ed4345970bc3beee511eecd3eaffe68de37e0aaa970ee834d0009c8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58E0 9412 bytes

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