Malicious PDF — malware analysis report

Static analysis result for SHA-256 82c6301d3098dd12…

MALICIOUS

PDF

35.8 KB Created: 2020-09-18 02:43:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0243313d4c9895cdc39f650de235527e SHA-1: 733ceaed5739c878e8584d72a4df2de0df619409 SHA-256: 82c6301d3098dd125a55572c98de41f16636e9d09b76caf73a03bbf7ac38469d
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 `https://ttraff.club/wix?keyword=banner+university+family+care+provider+manual`. Additionally, it exhibits a PDF link farm behavior, with numerous embedded links to external PDFs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL and several benign-looking PDF links, suggesting a lure to a malicious site disguised as a document. No scripts were extracted from this sample.

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.club/wix?keyword=banner+university+family+care+provider+manual
    • http://fegop.3angelscfs.com/uploads/1/3/0/7/130739101/vokolop_jiwejuruxerev_wamolarub_pudewa.pdf
    • http://files.suntreehealingarts.com/uploads/1/3/2/7/132740270/zipawe.pdf
    • http://bigife.alexiseve.com/uploads/1/3/1/3/131384605/6174262.pdf
    • http://files.agallisresidence.com/uploads/1/3/0/9/130969003/pipapidod.pdf
    • https://cdn.shopify.com/s/files/1/0437/7418/1534/files/96111304563.pdf
    • https://cdn.shopify.com/s/files/1/0431/3153/5524/files/rejaveg.pdf
    • https://cdn.shopify.com/s/files/1/0464/7256/0790/files/cash_flow_forecasting_techniques.pdf
    • https://e8e8d0e7-f01a-4cee-8480-7db6ce47edb7.filesusr.com/ugd/e1a791_04bb942b8fc645399fe181580fe943c9.pdf?index=true
    • https://d863f6e8-44c9-49b8-bfb8-3d7b1f113ef1.filesusr.com/ugd/fe83c3_62d145eeebe9418cbfad72138899338b.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0451/1177/1301/files/31750514852.pdf
    • https://cdn.shopify.com/s/files/1/0447/4237/7623/files/baofeng_uv-_9r_user_manual.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_off0000408a.bin
3b162cc866c80bd921c72aa0b2079730448f28a34df29fd79f086e8700d6c294		 pdf-font-stream PDF embedded font (sfnt) at offset 0x408A 5396 bytes
font_01_sfnt_off000052cf.bin
99f66ad65e101354fa19ef4ca8a2d4964462da22786b27b3226326838b81afb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52CF 9788 bytes
font_02_sfnt_off00007463.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7463 4324 bytes

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